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Windshield Washer Reservoir Replacement
 
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Pelican Technical Article:

Windshield Washer Reservoir Replacement

Jared Fenton

Time:

2 hours2 hrs

Tab:

$100

Talent:

***

Tools:

10mm wrench, small flat head screwdriver

Applicable Models:

Porsche 955 Cayenne (2004-10)
Porsche 955 Cayenne GTS (2008-10)
Porsche 955 Cayenne S (2003-10)
Porsche 955 Cayenne Turbo (2003-10)
Porsche 955 Cayenne Turbo S (2006-10)

Parts Required:

New reservoir, washer fluid

Hot Tip:

Make sure the pumps and sensor are fully seated in the reservoir

Performance Gain:

You can now see where you're going.

Complementary Modification:

Replace wiper blades

Over time, the windshield washer reservoir can crack along its seams, leaving you with a constant low washer fluid level error message and prevent you from keeping either the headlights or windshield clean. The good news is that the replacement reservoir is relatively inexpensive and can be changed in less than an hour.

The reservoir is located up inside the right hand side fender. You'll need to remove a few things to gain access. Begin by jacking up the front left of the car. Remove the wheel and also the wheel liner. You'll also need to remove the right headlight and the right engine cover for access to the filler neck. Please see our articles; Jacking Up Your Cayenne, Removing Engine Covers, Removing Wheel Liners and Changing Light Bulbs for more information.

The position of the filler neck makes it nearly impossible to drain the reservoir beforehand, so expect washer fluid to spill out when you disconnect the lines leading to the windshield sprayers.

Begin by opening the hood and remove the right engine cover.
Figure 1

Begin by opening the hood and remove the right engine cover. See our article on Removing Engine Covers for more information. The upper mounting screw for the reservoir filler neck is shown here (green arrow). This screw normally holds the filler neck to the engine cover.

Now remove the right headlight.
Figure 2

Now remove the right headlight. See our article Changing Light Bulbs for more information. This will give you access to remove the filler neck from the reservoir. Pull from the side of the green arrow. The filler neck will pull out of the reservoir.

Now jack up the car, remove the right side tire and also the inner wheel liner.
Figure 3

Now jack up the car, remove the right side tire and also the inner wheel liner. See our articles on Jacking up Your Cayenne and Removing Wheel Liners for more information. The reservoir is located up inside the fender towards the rear. Locate the electrical connector at the front of the reservoir (green arrow). Pull the connector out of the bracket.

Press the tab on the electrical connector (green arrow) and pull the connector apart.
Figure 4

Press the tab on the electrical connector (green arrow) and pull the connector apart. This connector controls the pumps and the level sensor in the reservoir.

Also locate the hose leading to the front headlight washers.
Figure 5

Also locate the hose leading to the front headlight washers. This hose sits in a groove molded into the side of the reservoir. Press the tab on the connection (green arrow) and pull the hoses apart. Be prepared for any washer fluid that may drain out.

Here are the two 10mm bolts (green arrows) that hold the reservoir to the chassis.
Figure 6

Here are the two 10mm bolts (green arrows) that hold the reservoir to the chassis. Remove the two bolts and swing the reservoir towards the front.

Here is the connection at the front of the reservoir.
Figure 7

Here is the connection at the front of the reservoir. You'll see the small tab (green arrow) that sits in the channel (yellow arrow) on the chassis. You'll need to rotate the whole reservoir to allow the tab to be removed from the channel.

Lower the whole reservoir down so you can access the other side.
Figure 8

Lower the whole reservoir down so you can access the other side.

You'll need to remove the two water lines (green arrows) from the pump assembly.
Figure 9

You'll need to remove the two water lines (green arrows) from the pump assembly. Simply pull them off. Be prepared for washer fluid to spill out if there is any left in the reservoir. Next, remove the reservoir from the car.

You'll need to transfer the pumps, hoses and wiring to the new reservoir.
Figure 10

You'll need to transfer the pumps, hoses and wiring to the new reservoir. Begin by pulling the washer fluid level sensor out of the reservoir (green arrow).

Here is the sensor removed.
Figure 11

Here is the sensor removed. Carefully pull the grommet (green arrow) out of the reservoir if you intend to transfer it to the new one.

Pull the windshield washer pump (green arrow) out of the reservoir.
Figure 12

Pull the windshield washer pump (green arrow) out of the reservoir. It might take a little effort to get it out.

Carefully pull the wiring harness (green arrow) out of the indentation on the reservoir.
Figure 13

Carefully pull the wiring harness (green arrow) out of the indentation on the reservoir.

Also pull out the two wires leading to the headlight washer pump (green arrow).
Figure 14

Also pull out the two wires leading to the headlight washer pump (green arrow).

Turn the reservoir over.
Figure 15

Turn the reservoir over. Press the tab (green arrow) on the electrical connector to the headlight washer pump and pull it off. Also pull the water hose out of the indentation on the reservoir (yellow arrow)

Carefully rotate the pump counter-clockwise and pull it up and out of the reservoir.
Figure 16

Carefully rotate the pump counter-clockwise and pull it up and out of the reservoir. You may need to gently pry it with a small flat head screwdriver.

Carefully remove the rubber grommets (green arrow) from the reservoir if you plan on using them in the new reservoir.
Figure 17

Carefully remove the rubber grommets (green arrow) from the reservoir if you plan on using them in the new reservoir. Use a small screwdriver to gently pry them out. Installing the new reservoir is the opposite of removal. Just remember to fill it up with washer fluid afterward.

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Comments and Suggestions:
Big R Comments: Will do thank u for ur time and experience
October 2, 2016
  Followup from the Pelican Staff: No problem. - Nick at Pelican Parts  
Big R Comments: I'm the owner of a 2004 Porsche Cayenne S, I've had a constant "OIL LEVEL TOO LOW" indication on my dash for some time now, its not there during start up but once I go past 30-40 miles an hour or rev it past I believe 2300 or above rpm it comes on and stays there until I start it up again. I've change the sensor, oil, filter, yet this warning still keeps coming up. I had a friend that works for Porsche run a diagnostic and even he said that it was weird that no codes were coming up. The truck runs fine no over heating oil level fine and no premature oil top off. I was told it could possibly be a wiring problem, has anyone encountered this dilemma, HELLLLP !!!!!!!
September 27, 2016
  Followup from the Pelican Staff: if the sensor is new, the wiring may be faulty. Only way to know is to test the signal to the module. - Nick at Pelican Parts  
kentsc Comments: I've just done the repair myself and found a couple of suggestions:
1. my tanks wasn't split, it was the rubber grommet that holds the pump in the bottle that was perished; and
2. If you decide to check that washer and wipers are working before you put everything back together, make sure your bonnet is closed otherwise you might waste an hour trying check fuses and connections like i did.
Happy repairs to all
March 12, 2016
  Followup from the Pelican Staff: Thanks for sharing your installation process and experience. These type of comments add so much to the Pelican tech community.
- Nick at Pelican Parts
 
Kelvin Comments: Anyway to drain all the fluid out the reservoir without removing it?
November 14, 2015
  Followup from the Pelican Staff: You can try sucking it out with a pump. You may get most of it. - Nick at Pelican Parts  
Hassy Comments: Hey does the cayenne s have a separate reservoir for the rear window or is it the same one?
June 25, 2014
  Followup from the Pelican Staff: If I remember correctly, the front reservoir services both windows. - Nick at Pelican Parts  

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Page last updated: Mon 3/27/2017 02:36:32 AM