GTS Boot Wiring Failures

WaveyDavey

Junior Member
Messages
69
This is probably completely obvious to 90% of owners by now, but I thought I'd highlight it for future forum searchers as nothing obvious came up for me.

If your rear lights fail or boot doesn't open electrically, chances are the wires through the loom from car body to boot lid have given up. The wires appear to fatigue from the regular flexing that occurs when the boot is cycled. It's pretty poor engineering, I've never experienced this issue in much older cars.

For me, one of my rear fogs was not operating so I had a look and found this:




As well as the fog light supply, two other cables had previously been (rather inelegantly) repaired, and two more were not going to last long with the insulation already failed.

I replaced all 5 with some fresh lengths of cable, soldered and heat shrunk at each end. Should be good for a few more years now:



It's an easy job and worth checking first if you get similar symptoms.
 

CatmanV2

Member
Messages
48,793
It certainly has been mentioned before, but if you couldn't find it, it's rather pointless :) Well done!

C
 

WaveyDavey

Junior Member
Messages
69
It certainly has been mentioned before, but if you couldn't find it, it's rather pointless :) Well done!

C

It's true, I did find a few mentions - but I thought a few photos and a bit more detail might encourage the cautious DIYer in future....
 

Masser50

Member
Messages
235
Happens on others cars, happened on my 5 series estate. At least there’s give in the wires on the GT, it’s was truly hard to fix on the 5 series as the wire loom runs through the roof.
 

Gp79

Member
Messages
1,398
Had to repair my Bm e61 tailgate wiring as well, very common problem on them, BMW offered to change the section of loom at nearly 1k so went for the DIY solder and heat shrink option like yourself.
 

Felonious Crud

Administrator
Staff member
Messages
21,187
Good post, Dave. This exact same car had the boot release issue which Catman describes, which meant opening it using the switch inside the car. Broken wire the culprit.