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2005 V70NAM56 Rear running lightsFuse 5, rear box Topic is solved

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abscate
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2005 V70NAM56 Rear running lightsFuse 5, rear box  Topic is solved

Post by abscate » Sun Nov 15, 2015 7:02 pm

Just have the P2 to Mom to drive and noticed no taillights or front running lights.

DRLs are turned off on this car.

Headlights and high beams work fine
Brake lights, turn flashers, hazards all work

Checked fuse 18 per diagram and its ok.

Away for three days - not critical as Mom only drives daytime but will need to address for next week.

Any hints on troubleshooting modules?
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Re: 2005 V70 NA Electrical problem running lights

Post by abscate » Thu Nov 19, 2015 10:23 am

Problem diagnosed in about 5 minutes

Rear driver electrical panel removed, checked fuse 5 for Rear Electronic Control Module. found dark oxidation on fuse pins, cleaned with Swiss Army knife, reinserted.

All lights functioning again.
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Re: 2005 V70 NA Rear running lights MVSOLVED Fuse 5, rear box

Post by abscate » Tue Aug 28, 2018 8:37 pm

Lights out again. Police acted as burnt bulb indicator. Will check fuse in morning.
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Re: 2005 V70NAM56 Rear running lightsFuse 5, rear box

Post by abscate » Wed Aug 29, 2018 7:00 am

Nailed it. Same problem
92AF18A9-97D4-4A2A-B47A-BDE3B7B1082B.jpeg
Opening the door to the REM
1DA0F9CA-07D0-488D-BC15-8A827565B9A0.jpeg
Location of Rear Light Fuse 10 Amp
5900CCCE-E3FA-406C-85FE-FA89BDA3F226.jpeg
Lights working!
B5126D7C-B77F-4492-8DD3-8F4E44B53EAB.jpeg
Good cleaned up
Attachments
E431A48F-1531-425C-885B-19461E79DDDF.jpeg
Nasty fuse
E431A48F-1531-425C-885B-19461E79DDDF.jpeg (174.29 KiB) Viewed 456 times
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Re: 2005 V70NAM56 Rear running lightsFuse 5, rear box

Post by precopster » Wed Aug 29, 2018 7:23 am

Great find. I often see that discoloration on Volvo fuses. It's odd that a low wattage circuit should have corroded contacts. Perhaps tin the fuses with solder?

I'm running non Canbus friendly LEDs on my rear brake lights to combat the inevitable melting of the housing around the globe holders due to the heat from 21W globes. Each time I press the brake pedal the DIM tells me the brake lights are out :?
Current cars:2002 XC70, 2006 Ssangyong Rodius (Stavic), 2006 XC90 2.5T, VW Transporter 2.5TDI

www.precisioncarmodules.com.

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Re: 2005 V70NAM56 Rear running lightsFuse 5, rear box

Post by abscate » Thu Aug 30, 2018 3:58 am

No warning from the DIM on this one, but of course of it is a current comparator circuit, the two circuits were equally balanced at 0!

I’ll confess I am wondering how long these were out. I dont the drive much at night. Car last inspected in Sep 2017.
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Re: 2005 V70NAM56 Rear running lightsFuse 5, rear box

Post by abscate » Sat Sep 01, 2018 11:05 am

Technical correction

Fuse 5 is not for the tail lights, but listed as the "REM" fuse.
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