Hey, good work on this.
It has been discussed but never has there been a write-up.

 

Nice Clear - Pic's and Labels : :thumbup: We need more electrical Stickies . :beer:

Add Notes .

What was the Cause , I mean I see broken Wire casings , but looked like they got Pitched .
At least on other Post .

Wonder If this is a Sedan Only Issue any Wagons having this ?

 

What is the annoying/difficult part, exactly?

 

Thanks for the write up. Stickied this.

 

Thanks for the praise all!

Jexx- The annoying part is the removal and re-connecting of the license plate lighting attachment point. It is located behind some metal, and there are only the 2 small holes (the "manipulation point" and "eye hole" in the photo) from which to see.

EngTech- You are right, I'm fairly certain it broke from extended use/pinching of the harness. The design itself leaves the harnesses open for easy pinching between the trunk door and the car body.

 

trunk lid open

Would this fix the "Trunk Lid Open" message on my dash despite it being closed and fully latched?

 

Anybody?

 

Great write up!

I removed the 4 T25 screws above the license plate so I can easily remove and reconnect the connector to the license plate lights / truck release button instead of using the eye hole.

 

Great write up!

I removed the 4 T25 screws above the license plate so I can easily remove and reconnect the connector to the license plate lights / truck release button instead of using the eye hole.

this is exactly what i plan on doing. i took everything apart and this reinstall should take no more than 30 minutes.

thank you forums for helping me save a ton of money!

 

Easier way to fix: cut out and replace broken wiring. Cheapest solution by far.

 

Unfortunately I do not have the emergency trunk release.... Apparently some Canadian models did not get one for 2006... and my trunk will not open.

 

Sorry to resurrect an oldie, but I have the same problem, no emergency trunk release. You able to fix yours on your own?

 

Canadian Cars:

My understanding is that NO Canadian cars have the internal emergency trunk release (not a requirement maybe? So Volvo saves money by not installing it? Really?? So now Volvo has to have different latches fabricated, catalogued and stocked? I don't get the logic). Being thoroughly upset with this situation, I ordered a US latch (has an extra part with release cable), and the separate glow in the dark handle. It's been a few years since I installed the US parts, but from what I can remember, I had to have the dealer get the trunk open initially and they offered to do a temporary fix to the wiring harness (they charged me about C$40). I then retrofitted the latch with the US model (1.5 on 10 level of difficulty). Harness is now acting up again so it's great having a way to open the trunk while I explore whether to install a new harness, or fix existing harness.

 

I'm doing this now. To say crappy wiring is an understatement. Look at my picture where the wires are just connected by tape!

'10 s40 m66 awd
'12 c30

 

2010 S40 harness repair



Thanks for the pics. My S40 had the same issue (one wire severed, one wire severely frayed). Took me 30 minutes to spice the wires and button everything back up.

My wallet & I both thank you.

 

Looks like it might have been repaired before!

 

Upon closer inspection, it's a 3 way connection and appears to be factory welded, so it was secure. The issue is they used too stiff of wire, so the rubber ends up fracturing.


'10 s40 m66 awd
'12 c30

 

I had to do this at the beginning of the summer. I just ordered a new harness. Some of my plastic trunk carpet fastners did not survive me pulling them out.. Is there a cheap replacement part vs a Volvo part?

Also its much easier to attach the end of the cable by taking off the License Plate light section so you can just plug it up with out having to stick adult hands inside that small area

See below for Pics

 

I had to do this at the beginning of the summer. I just ordered a new harness. Some of my plastic trunk carpet fastners did not survive me pulling them out.. Is there a cheap replacement part vs a Volvo part?

Also its much easier to attach the end of the cable by taking off the License Plate light section so you can just plug it up with out having to stick adult hands inside that small area

My lack of access to photo sharing sites at work limits my options.. Hopefully you can see 2 pictures in this album ....

https://1drv.ms/i/s!AmIPLfp3XIOQjOUUtDlR1Ow5bMcPEA

Only see one (pre or post photo of the license plate light housing installed).

 

Just remove the 4 screws, it comes right off.

 

Remove the 4 screws

And then gain access to the plug

 

For all those that don't have the trunk release, it's still easy. I just changed mine. Just crawl in from the front (fold the seats down). And start by removing the carpet that is covering the latch after that take off the connector for the harness that is right under the rear window. Then take off the connector that is on the lock, now just take out the 4 torx 25 that are right over the license plate and you can get the whole thingy with the license plate lights out. and remove the connector to the switch for the lock. Now you can just temporarely connect the new wire harness to all the connectors and you can open your trunk again.

 

Very helpful thread - thank you.
I was receiving 'Boot Lid Open' message on S40 2008 even though it was firmly closed and hazard lights were not flashing when the car was being locked.
Turned out one cable was completely broken and all other others were damaged in 2 places.

 

I did skip 1 of the reattachment points and did a nice wide loop into the plug for the harness on my end. It's not good in that unlike the stock setup, if I slide something in the trunk, I can hook the harness and cause an issue. It's flat and flush with the roof of the trunk so it's not likely but it is possible. On the bright side, the harness will not vibrate itself to the sheetmetal and cut the wires over time.

Something also to consider, what I did too, is put some of those door edge guards from walmart on the sheetmetal and remove that sharp edge from rubbing on the wires and causing a short, in case an owner behind me has to replace the harness and does it the right way, it should last forever at that point.