C5 X7 Window Regulator Replacement

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bobins
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C5 X7 Window Regulator Replacement

Post by bobins » 18 Jun 2017, 16:51

If you own a 2008 onwards C5, then sooner or later the window winder / regulator mechanism will break and need to be replaced. Normally the cables in the mechanism rust through and prevent the window from opening or closing. As a short term fix, it should be possible to lift the glass by hand and tape it into the closed position.

The following gives guidance on how to remove the door trim to access and remove the winder mechanism. I haven't shown how to rewind new cables onto the old mechanism as the existing mechanism was showing signs of wear, so I elected to buy a new winder mechanism minus winder motor, and transfer the old motor to the new mechanism. It should be possible to buy a similar kit for £40-£50.

Tools needed:
T30 Torx bit - ideally a long Torx bit or on a short extension bar.
Stanley knife blade or scalpel.
Drill and approx 5.5mm drill bit.
4x rivets approx 5mmx15mm (or nut and bolts to suit).
Non marking trim removal tools.
Gaffer tape or similar.

First remove the door handle trim, unclip from the front first
20170618_113428.jpg
Own work
There is a long securing piece to the rear, so the trim has to be slid out forwards
20170618_113443.jpg
Own work
Next, remove the grab handle trim. It is secured with three main clips (circled)
aro.jpg
Own work
Insert a small screwdriver from underneath to release these clips - starting from the rear
20170618_115235.jpg
Own work
20170618_144020.jpg
Own work
Once the trim is removed, undo the two Torx head screws securing the grab handle.

Prise out the window control in the armrest, and unclip the elctrical connectors, and remove the puddle light (if fitted) and disconnect.
20170618_115712.jpg
Own work
Starting from the bottom of the door, pull away the trim and unclip the clips around the edge of the door. It is normal for some of them to break. The majority of them are part number 9341PF and can be bought for around £3.00 for 10 from the usual web outlets.

Once you've removed the trim and recovered the broken clips from the bottom of the door frame, you should be left with the white insulation / weatherproofing sheet attached to the door frame.
20170618_120409.jpg
Own work
Roughly in the centre of this is a large plastic mount. Slacken the centre screw (but do not remove it fully) and manipulate it so the mount detaches from the car. It secures by a 'cam' mechanism :
20170618_120839.jpg
Own work
Start peeling and cutting off the adhesive from the back of the white sheet with a blade. Aim to leave as much of the adhesive on the sheet and not on the door frame as it will restick to the frame once you come to reassemble it if you keep it clean.

The speaker needs to be removed to access one of the lower winder securing screws. Drill out the four rivet heads that secure the speaker. There's no need to unscrew the speaker from it's mount. Keep the large flat pieces of the rivet heads - these can be re-used later. Move the speaker to one side. Remove the remnants of the rivets still left in the door. It may be useful to cut them back with a pair of pincers before tapping the remnants through.

Position the glass so you can access the two screws which secure the bottom of the glass to the winder mechanism. Undo and remove the two screws. (Rear one shown)
20170618_122204.jpg
Own work
Carefully raise the glass by hand and tape it to the top of the frame to keep it out of the way. There's no need to remove it from the door frame.

Undo the six screws securing the mechanism to the door frame. Two of the screws are located behind foam covers at the top of the door. One of these is behind the door handle - which should be slid backwards to unclip it from the door. Carefully cut and peel the foam adhesive away from the door to access the screws. Two of the screws are near the motor, the last two secure the botom of the mechanism frame - one being behind where the speaker was. There'll be an additional clip to remove (roughly in the centre of the door) that secures one of the mechanism cables to the door frame.

Manoeuvre the mechanism and frame out of the door.

Old frame above, new frame below.
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Own work
20170618_123348.jpg
Own work
20170618_123320.jpg
Own work
Before fitting the frame back into the door, make sure it is thoroughly greased - both cables and slider mechanism. Also, thoroughly check the bottom of the inside of the door for bits of debris which would otherwise rattle when driving along !
Once the frame is back in, the speaker can be riveted (or bolted) back. Re-use the old large rivet heads if you don't have any large headed rivets to hand.
VERY CAREFULLY lower the glass back down to its mounting points and refit the two screws - it'll want to slide out of its runners if you're not careful.
Refit the (top) door handle.
Firmly re-attach the white insuation / weatherproofing sheet.
Replace any broken door trim clips and re-attach the door trim to the door.
Re-assemble the rest of the trim and the grab handle.

The window winder mechanism will need to be re-initialised:
Raise the window using the switch to its fully closed position. Hold the switch in the 'up' position for 5-10 seconds. Lower the window fully. Raise the window fully using the 'automatic' function. Check the anti-pinch works.
Last edited by bobins on 29 Jun 2017, 18:25, edited 2 times in total.
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Re: C5 X7 Window Regulator Replacement

Post by Hell Razor5543 » 18 Jun 2017, 18:08

Nice write up. I wonder if using a hair dryer on the plastic weatherproofing sheet (around the edges) might soften up the adhesive enough to make it easier to remove cleanly?
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bobins
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Joined: 05 Jul 2012, 18:07
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Re: C5 X7 Window Regulator Replacement

Post by bobins » 18 Jun 2017, 18:47

I don't think so unfortunately. It's a foam based adhesive that's really quite sticky. It's actually no problem to cut it and get it to stick back together though :)
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