S40 (New) Electrics : - Boot Lid Open Message / Boot won't open

landmark · Mar 22nd, 2015, 20:32

Hi All,

I have a Volvo S40 2007. About two weeks ago, I noticed all the following things happened at the same time:
(1) Boot lid open message on dashboard (when boot closed)
(2) Lights in the boot are very dim and are on even when the boot is closed
(3) The boot usually doesn't open when I press the boot release catch but does occasionally.
(4) Number plate lights are very dim but get much brighter when I press the boot release catch.

I've seen the posts about broken wires in the wiring loom and have tested the length of this - bending it etc - to see if it fixes the problem - but it doesn't seem to.

Any idea what it is? Is it still likely to be the wiring loom?

Regards,

Mark

Wooders · Mar 22nd, 2015, 20:45

It's not a big job to check to loom,mine broke in the flex between boot lid and body.No way to check without seeing the wires themselves.

alexstanleyv50 · Mar 23rd, 2015, 10:08

Symptoms suggest wiring loom.

Easy to fix (if you can get the boot open).

If not loom then look at micro switch and associated bracket (reg plate lights etc) as that often goes.

Again easy to fix and cheep (around £14 from dealer). If you find you cannot get the boot open undo the boot handle - there's a couple of torx screws near the reg lights iirc - and make contact between the two wires feeding the microswitch. If it opens you will then know its the microswitch....

Snoodini · Mar 23rd, 2015, 16:15

99% chance it's the wiring loom. I wrote a replacement guide with pictures here: Replacement Guide

landmark · Mar 23rd, 2015, 22:45

Thanks everyone for the advice, yes it turned out to be the wiring loom.

I purchased a new wiring loom and thanks to the guide from Snoodini, it turned out to be very easy to replace. Saved a more than a few euros by doing it myself.

I just opened up the old one - a completely severed cable inside the the rubber tube at the point where it enters into the boot lid.

Mar 22nd, 2015, 20:32	#1
landmark New Member Last Online: Dec 31st, 2020 13:34 Join Date: Mar 2015 Location: Dublin	Boot Lid Open Message / Boot won't open Hi All, I have a Volvo S40 2007. About two weeks ago, I noticed all the following things happened at the same time: (1) Boot lid open message on dashboard (when boot closed) (2) Lights in the boot are very dim and are on even when the boot is closed (3) The boot usually doesn't open when I press the boot release catch but does occasionally. (4) Number plate lights are very dim but get much brighter when I press the boot release catch. I've seen the posts about broken wires in the wiring loom and have tested the length of this - bending it etc - to see if it fixes the problem - but it doesn't seem to. Any idea what it is? Is it still likely to be the wiring loom? Regards, Mark

Mar 23rd, 2015, 10:08	#3
alexstanleyv50 Member Last Online: Dec 2nd, 2021 16:51 Join Date: May 2013 Location: Matlock	Symptoms suggest wiring loom. Easy to fix (if you can get the boot open). If not loom then look at micro switch and associated bracket (reg plate lights etc) as that often goes. Again easy to fix and cheep (around £14 from dealer). If you find you cannot get the boot open undo the boot handle - there's a couple of torx screws near the reg lights iirc - and make contact between the two wires feeding the microswitch. If it opens you will then know its the microswitch.... __________________ 2004 V50 T5 SE 6 Speed Manual The Death Star... 2009 S40 2.0i R-Design 5 Speed Manual The Flash Car...

Mar 22nd, 2015, 20:45	#2
Wooders Member Last Online: May 13th, 2021 07:54 Join Date: Jan 2012 Location: Cumbernauld	It's not a big job to check to loom,mine broke in the flex between boot lid and body.No way to check without seeing the wires themselves.

Mar 23rd, 2015, 16:15	#4
Snoodini Member Last Online: Jul 20th, 2021 08:47 Join Date: Nov 2013 Location: Gothenburg	99% chance it's the wiring loom. I wrote a replacement guide with pictures here: Replacement Guide

Mar 23rd, 2015, 22:45	#5
landmark New Member Last Online: Dec 31st, 2020 13:34 Join Date: Mar 2015 Location: Dublin	Thanks everyone for the advice, yes it turned out to be the wiring loom. I purchased a new wiring loom and thanks to the guide from Snoodini, it turned out to be very easy to replace. Saved a more than a few euros by doing it myself. I just opened up the old one - a completely severed cable inside the the rubber tube at the point where it enters into the boot lid.

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