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Mercedes-Benz W123 300TD Wagon (1977-1985)
Technical Articles

Welcome to our Mercedes-Benz W123 Technical Articles section. We've gathered a vast collection of useful articles to help you perform many repairs and upgrades on your Mercedes-Benz. Save money by doing your own work and perform the repairs using the information we've provided here. Can't find what you're looking for? Check out our Enthusiast Forums - focusing on maintenance and repairs for all Mercedes-Benz! If you'd like to submit a Tech Article based on your experience, contact us here!

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Jump to: Engine | Fuel Injection | Cooling System | Suspension | Brakes | Transmission & Axles | Electrical | Interior | Body

 Basics & Essentials
Air Filter Replacement
In this article, we'll go over the simple process of removing and replacing your air filter
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Wiper Blade Replacement
Save yourself some money and change your own wiper blades
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Jacking Up Your W123
Safely lift and support your vehicle with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Battery Connection Notes and Replacement
Learn how to safely jump start your vehicle or replace a worn out battery with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
 Engine
EGR Valve Replacement
Need to replace your EGR valve to pass a smog test, this article will show you how
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Fan and Shroud Removal
Remove your fan and shroud with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Air Filter Housing and Intake Pipe Removal
Safely remove the air filter housing and intake pipe to give you more room to get at tough components
     Applies to:
Drive Belt Replacement
Replace all of your drive belts with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Crankshaft Positioning Sensor Replacement
If you need you CPS for diagnosing a problem and it is not working this article will show you how to replace it
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Vacuum Transducer Replacement
Check your vacuum lines before replacing the vacuum transducer or amplifier
     Applies to: 300TD (1979-85)
Oil and Filter Change
Regular oil and filter changes are the best thing you can do for your vehicle
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Oil Pan Gasket Replacement
Fix your leaking oil pan gasket with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Vacuum Pump Replacement
You can replace your own vacuum pump with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Valve Cover Gasket Replacement
Valve covers leak, keep your engine clean by replacing your leaky cover
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Auxiliary Fan Replacement
Make sure your auxiliary fan is working before the summer gets here
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Valve Adjustment
Restore lost power and keep your engine running correctly by performing a valve adjustment
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
AC Temperature Switch Replacement
Get your auxiliary cooling fan working again by replacing a faulty temperature switch on the receiver/dryer
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Glow Plug Replacement
Replace your glow plugs and ream out the opening with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Glow Plug Relay Replacement
Replace this high fail item with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Turbo Oil Drain Tube Replacement
Get rid of those messy oil leaks by replacing the turbo oil drain tube and seals
     Applies to: 300TD (1979-85)
Turbo Removal
The turbo is going to need to come out of your vehicle for several reasons and this article will show you how to remove the complete unit.
     Applies to: 300TD (1979-85)
AC Pressure Switch Replacement
Your AC will not work with a faulty pressure sensor, just make sure to safely remove the refrigerant before replacing it
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Trap Oxidizer Replacement
A clogged trap oxidizer will rob your engine of power and fuel economy
     Applies to: 300TD (1979-85)
Intake and Exhaust Gasket Replacement
Replace the single piece exhaust and intake gasket with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Rocker Removal and Replacement
Removing your rockers is easy with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Timing Chain Replacement Replacement
Changing your timing chain can be a daunting experience but follow these step by step instructions and you will be fine.
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Timing Chain Tensioner Replacement
If your chain tensioner has over 100,000 miles on it, it is time to change it out
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Camshaft Removal
Follow these instructions to help remove your camshaft
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Engine Head Gasket Replacement
Replacing your head gasket is the biggest job you will probably perform on your car, let us help with these instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Power Steering Pump Rebuild
Rebuild your leaking power steering pump with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Motor Mounts and Shocks Replacement
Replace tired and worn mounts and shocks with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Fuel Injection
Fuel Filter Replacement
Make sure you change out your fuel filters at the regularly schedule times and do not let them get as bad as the ones on our project car
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Diesel Purge
Rough running motor, poor acceleration? This is the first thing you should try
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Glow Plug Coolant Sensor Replacement
Replace your glow plug coolant sensor with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Injector Pump Shutoff Valve Replacement
Engine having a hard time shutting off? Make sure to check and or replace your injector pump shut off valve.
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Overload Protection Relay Replacement
Overload protection relays are located in different places on different chassis, so check for the location of yours and follow these instructions.
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Fuel Level Sender Replacement
Know how much fuel is in your tank by replacing a broken or faulty fuel level sender
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
 Water Cooling
Coolant Flush and Replacement
Drain flush and refill your coolant with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Coolant Expansion Tank Replacement
Replace a failing expansion reservoir tank with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Auxiliary Coolant Pump Replacement
Replace your auxiliary coolant pump before it causes damage to the engine
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Coolant Hose Replacement
Check your coolant hoses once a year and replace them at the first signs of failing
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Thermostat Replacement
Get your cooling system working correctly by replacing your thermostat
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Auxiliary Fan Switch Replacement
Make sure your cooling fan is functioning properly by replacing a failed auxiliary fan switch
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Blower Motor Sensor Replacement
If your blower motor will not function once the vehicle is warmed up it may be your blower motor temperature sensor
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Coolant Temperature Sensor Replacement
Get your temperature gauge working again by replacing a faulty coolant temperature sensor
     Applies to: 300TD (1979-85), 240D (1977-83), 300CD (1978-85), 300D (1977-85)
Radiator Replacement
Replace your radiator with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Water Pump Replacement
Replace your failed water pump with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Heater Valve Replacement
Get your heater working correctly by replacing a faulty heater valve
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
 Suspension
Power Steering Filter and Flush
Power steering filter and fluid replacement should be part of your regularly scheduled maintenance
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Self-Leveling Valve Rebuild
Rebuild your self-leveling valve with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Understanding Self-Leveling Suspension
This guide will give you an understanding of the self-leveling rear suspension
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Tie Rod Replacement
The ball joints on your tie rods will wear out, learn how to replace them in this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Idler Arm Bushing Replacement
Tighten up the steering by replacing worn idler arm bushings with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Drag Link Replacement
Tighten up the steering by replacing worn out drag link with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Steering Dampener Replacement
One of the most overlooked items on the steering system is the dampener, but replacing it might just bring back that factory feel to your car
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Front Shock Replacement
Car bouncing down the road? Fix it by replacing your worn out front shocks
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
  Brakes
Replacing Your Parking Brakes
Replace your parking brake shoes yourself and save a lot of money
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Rear Brake Pad Replacement
Replace your rear brake pads with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Rear Brake Caliper Replacement
Replace a failed rear brake caliper with these easy step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Parking Brake Adjustment
Parking brake shoes wear and need adjustment ever now and then; this article will show you how
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Rear Brake Rotor or Disc Replacement
Rotors wear out and warp, make sure you inspect yours and replace them with the help of this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Fuel Level Sender Replacement
Know how much fuel is in your tank by replacing a broken or faulty fuel level sender
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Front Brake Pad Replacement
Replace your front brake pads with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Bleeding Brakes
Learn to bleed your own brakes and get that firm pedal feel back
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Flexible Brake Line Replacement
Check the condition of your flexible brake lines every year and replace them with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Front Brake Caliper Replacement
Replace a failed front brake caliper with these easy step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Brake Reservoir Replacement
If your brake fluid reservoir is leaking you need to replace it right away and this article will show you how
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Brake Master Cylinder Replacement
Replace your own master cylinder and save some money
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Front Brake Rotor Replacement
If your getting a pulsing sensation when braking it might be time to change your rotors
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Brake Booster Replacement
Replace a failed brake booster with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
 Transmission and Axles
Differential Fluid Replacement
Find out how to change your Differential Fluid with the help of this article!
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Axle Replacement
No matter how robust an axle is, it can still get damaged and wear out. If your axles need replacement or removal to fix a CV boot, this article is for you
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Differential Mount or Bushing Replacement
Replace a worn out or damaged differential mount with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Automatic Transmission Fluid and Filter Change
Keep your transmission running like new with regular fluid and filter changes
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Shifter Bushings Replacement
Get that factory feel back to your shifter by replacing the shift rod bushings
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Transmission Mount Replacement
Excessive or unusual noise when getting on or off the gas can be a sign of a failing transmission mount
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Flex Disk Replacement
Clunking noise from the drive train; make sure to inspect your flex disks!
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Drive Shaft Bearing Replacement
Replace your drive shaft bearing with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
 Electrical
Blower Motor Resistor Replacement
Replace a failed blower motor resistor with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Alternator Replacement
Check and replace your alternator with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Voltage Regulator Replacement
Check your voltage regulator before replacing the alternator, sometime a regulator is all you need
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Boost Sensor Replacement
Replace your boost sensor with help from this article.
     Applies to: 300TD (1979-85)
Headlight and Fog Light Replacement
Check whether your vehicle has sealed beams or Euro lights before ordering your parts on this project
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Cruise Control Actuator Replacement
Follow these instructions to replace your cruise control actuator
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Steering Column Switch Replacement
Replace your turn signal and cruise control stalks with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Headlight Switch Replacement
Replacing your headlight switch is simple and easy and a great way to get started on DIY
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Instrument Cluster Removal
Remove your cluster safely and easily with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Ignition Tumbler Removal
Replace a failing ignition tumbler while you can still turn the key otherwise it will become a much bigger job
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Windshield Wiper Relay Replacement
Replacing the windshield wiper relay is easy, once you remove the instrument cluster and we will show you how
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Ignition Switch and Assembly Replacement
Replacing the ignition switch and assembly is made easier with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Brake Light Switch Replacement
Make sure you have working brake lights by replacing a faulty brake light switch
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Courtesy and Glovebox Switch Replacement
Some jobs you just must do yourself and changing out the courtesy and glove box switches is one of them
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Clock Speedometer Bulb Replacement
Replace broken instruments in the gauge cluster with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Rear Window Defroster Relay Replacement
Why Mercedes put the rear window defroster relay where they did we may never know, but we can show you how to change it
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Flasher Switch and Relay Replacement
Replace your flasher switch and relay with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Climate Control Replacement
Follow these instructions to safely replace your climate control unit
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Dash Switches and Climate Control Light Replacement
See your dash switches at night again by following this articles instructions to replacing your bulbs
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Dash Switches Replacement
Get your dash switches working again by replacing them with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Rear Lock and Latch Replacement
Don't be locked of of your hatch, replace a broken lock or latch with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Blower Motor Replacement
Get your HVAC blowing again by replacing a broken blower motor with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Intermittent Wiper Relay Replacement
Get your intermittent wipers working again by replacing a failed relay
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
 Interior
Steering Wheel Removal
Remove your steering wheel with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Under Dash Panel Removal
Remove your under dash panels without damaging them by following the instructions here
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Seats Replacement
Removing your seats is easy with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Shifter Bushings Replacement
Get that factory feel back to your shifter by replacing the shift rod bushings
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Lower Center Console and Switch Replacement
Replace your lower center console switches without damaging the wood panel
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
 Body
Grille Removal
How to remove the front grille for greater access to the engine compartment.
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Hood Emblem Removal
How to replace the hood emblem from the grille assembly.
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Exterior Door Handle Removal
Remove your door handles safely and easily with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Hatch Latch Replacement
Remove and or replace your door latch with these step by step instructions
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Front Door Panel Removal
Front door panel removal is made easy with this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Door Stop Replacement
Get your doors opening back to opening and closing correctly by replacing your failed door stops
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Exterior Rearview Mirror Replacement
Follow these instructions to easily replace your exterior rearview mirrors
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Front Window Regulator Replacement
Don't get stuck with non functioning windows, replace your regulator with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Rear Door Panel Removal
Rear door panel removal is made easy with this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Rear Window Regulator Replacement
Don't get stuck with non functioning windows, replace your regulator with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Hatch Strut Replacement
Don't let your hatch fall on your head, replace failing hatch shocks with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Rear Hatch Panel Removal
To get at the hatch lock or rear wiper assembly you will need to remove the rear hatch panel and this article will show you how
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Rear Wiper Motor Replacement
Replace a broken rear windshield wiper motor with help from this article
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
Vacuum Lock Accuator Replacement
Get your central locking system working again by replacing faulty actuators
     Applies to: 300TD (1979-85), 230 (1977-78), 240D (1977-83), 280CE (1978-81), 280E (1977-81), 300CD (1978-85), 300D (1977-85)
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