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Old May 2nd, 2021, 19:23   #2
john langrick
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Last Online: Today 09:49
Join Date: Dec 2016
Location: Southend on sea
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Hi, I understand that for safety reasons the high level stop lights and the low are on separate circuits for failsafe reasons. If you short them you could start causing further problems.

I also understand that, on some models, part of the stop light circuits are on the cem rather than the rem.

However, on tracing problems on an earlier v70, I discovered my problem was with the relays, in my case the lower port and starboard lights.

I found the problem by swapping relays for those with the same part number.

You need to check the wiring diagrams to see if the relays are on the rem or cem.

My own xc90 is an earlier model so cannot compare.

I hope this helps..

John l
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