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Hatch Lock and Latch Replacement
 
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Pelican Technical Article:

Hatch Lock and Latch Replacement

Steve Vernon

Time:

2 hours2 hrs

Tab:

$80 to $290

Talent:

**

Tools:

10mm, 8mm wrench, trim removal tool

Applicable Models:

Mercedes-Benz W124 (1986-95)

Parts Required:

Lock, actuator and latch

Hot Tip:

Use care with the vacuum line

Performance Gain:

Ability to get in your hatch

Complementary Modification:

Check all your locks

If you are beginning to have troubles with your hatch lock or handle system it is a good idea to have a look at it before you get locked out; sometimes all that is needed is a little lubricant to get things working again. To service or replace the locking system you will need to first remove the rear hatch panel. Please see our article on rear hatch panel removal for further assistance.

With the hatch panel off you can see the different components, the rear handle (blue arrow), the actuator (yellow arrow), the wiring connections (green arrows) and the lock (red arrow).
Figure 1

With the hatch panel off you can see the different components, the rear handle (blue arrow), the actuator (yellow arrow), the wiring connections (green arrows) and the lock (red arrow).

To remove or replace the actuator disconnect the connecting rod (red arrow) from the lock (yellow arrow) by reaching through the access hole and popping the rod out of its plastic retainer in the lock.
Figure 2

To remove or replace the actuator disconnect the connecting rod (red arrow) from the lock (yellow arrow) by reaching through the access hole and popping the rod out of its plastic retainer in the lock.

Use an 8mm wrench and loosen the two bolts holding it in place (red arrows).
Figure 3

Use an 8mm wrench and loosen the two bolts holding it in place (red arrows). You do not need to remove the bolts just loosen them enough to allow the actuator to slide out.

Slide the actuator out from the mounts and towards the center of the door.
Figure 4

Slide the actuator out from the mounts and towards the center of the door. Disconnect the vacuum line from the actuator (red arrow). Use care as these vacuum lines can get brittle over the years and any cracks you cause will cause a leak and lead to failure of the system.

Remove the two rods connecting the handle to the locking mechanism.
Figure 5

Remove the two rods connecting the handle to the locking mechanism. One will pop out from its plastic mount (yellow arrow) and then lift the locking mechanism and slide the rod out (red arrow).

Lift the lower electrical connection from the plastic mounting clip and separate the three prong connector (red arrow).
Figure 6

Lift the lower electrical connection from the plastic mounting clip and separate the three prong connector (red arrow).

Use a flathead screwdriver and pop the upper electrical connector out from its mount in the hatch (red arrow).
Figure 7

Use a flathead screwdriver and pop the upper electrical connector out from its mount in the hatch (red arrow).

Slide the cover off the connection (red arrow) and separate them.
Figure 8

Slide the cover off the connection (red arrow) and separate them.

Remove the two 10mm bolts from the lower latching mechanism (red arrows).
Figure 9

Remove the two 10mm bolts from the lower latching mechanism (red arrows).

Remove the three 10mm bolts holding the mechanism in place (red arrows).
Figure 10

Remove the three 10mm bolts holding the mechanism in place (red arrows).

Push the lock out from the rear of the door and remove the locking mechanism from the hatch.
Figure 11

Push the lock out from the rear of the door and remove the locking mechanism from the hatch.

You can replace the lock tumbler (red arrow) separately by removing the two 8mm bolts (yellow arrows).
Figure 12

You can replace the lock tumbler (red arrow) separately by removing the two 8mm bolts (yellow arrows). Installation is the reverse of removal.

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Page last updated: Sat 12/3/2016 02:43:07 AM