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2005 xc70, gremlins in the taillights

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mrscullini
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2005 xc70, gremlins in the taillights

Post by mrscullini » Thu Jan 09, 2020 6:58 pm

got some electrical gremlins in my wife's car. we seem to be loosing the taillights. at the same time we loose the front and rear fog lights. the headlights, brake lights and reverse lights continue to work the fuse is ok.

it seems shutting off and restarting solves the issue, at least temporarily.

any thoughts??

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abscate
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Re: 2005 xc70, gremlins in the taillights

Post by abscate » Fri Jan 10, 2020 9:17 am

I had trouble with the fuses in my Rear Electronics Module (REM) in my 2005 - it behind a trim cover on left side in trunk area.

Fuse 5 or 6 would corrode and knock out the taillights

I wrote it up in a thread, which you can find a link in my maintenance log below - 2005 CATHERINE V70 is the title
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1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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mrscullini
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Re: 2005 xc70, gremlins in the taillights

Post by mrscullini » Fri Jan 10, 2020 11:26 am

abscate wrote:
Fri Jan 10, 2020 9:17 am
I had trouble with the fuses in my Rear Electronics Module (REM) in my 2005 - it behind a trim cover on left side in trunk area.

Fuse 5 or 6 would corrode and knock out the taillights

I wrote it up in a thread, which you can find a link in my maintenance log below - 2005 CATHERINE V70 is the title
great, thanks. i'll check it out.

also posted over at SS, suggestion there was a possible relay on the REM.

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abscate
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Re: 2005 xc70, gremlins in the taillights

Post by abscate » Fri Jan 10, 2020 1:12 pm

Empty Nester
A Captain in a Sea of Estrogen
1999-V70-T5M56 2005-V70-M56 1999-S70 VW T4 BMW
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RickHaleParker
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Re: 2005 xc70, gremlins in the taillights

Post by RickHaleParker » Fri Jan 10, 2020 2:11 pm

mrscullini wrote:
Thu Jan 09, 2020 6:58 pm
taillights. at the same time we loose the front and rear fog lights.



any thoughts??
Light Switch Module (LSM) and Central Electronics Module (CEM) are the only two things common to all three.
Platform: P80 1998 C70, B5234T3, 16T, AW50-42, Bosch Motronic 4.4, Special Edition package, Plant: Uddevalla Sweden.

Platform: X40 (Nedcar) 2003 S40, B4204T3, 14T twin scroll AW55-50/51SN, Siemens EMS 2000. Plant: Born Netherlands.

Platform P2 2005 XC90 T6 Executive, B6294T, 4T65 AWD, Bosch Motronic 7.0,
Plant Torslanda Sweden.
----------------------------------------------------------------
1997 S90, B6304S, AW30-42, Bosch Motronic 4.4 - Sold

mrscullini
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mrscullini

Re: 2005 xc70, gremlins in the taillights

Post by mrscullini » Fri Jan 10, 2020 2:31 pm

RickHaleParker wrote:
Fri Jan 10, 2020 2:11 pm
mrscullini wrote:
Thu Jan 09, 2020 6:58 pm
taillights. at the same time we loose the front and rear fog lights.



any thoughts??
Light Switch Module (LSM) and Central Electronics Module (CEM) are the only two things common to all three.
thanks. pulled fuse 5 as abscate suggested. mine looked worse than his.

didn't have the correct amperage to replace, cleaned with sand paper and reinstalled. we'll monitor and see what happens.

thanks abscate!

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