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Help - CEM - no indicators, wipers, steering wheel controls

Help, Advice, Owners' Discussion and DIY Tutorials devoted to the second generation C70, S40 and V50 Volvos -- awkwardly model year 2004 ½ onwards -- plus where to go for advice and discussion on Volvo's sporty C30 Coupe powered by Volvo's ubiquitous inline 5-cylinder power plant.
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V50 Dom
Posts: 1
Joined: 21 April 2010
Year and Model: V50 2005
Location: Dublin, Ireland

Help - CEM - no indicators, wipers, steering wheel controls

Post by V50 Dom »

Hi all,

Im in need of some help,

My v50 2005 has gremlins and my volvo dealer wants to change everything indicating to me that he is not sure what is wrong.

Symptoms are no steering wheel controls.... and now won't start, i don't think these are related... read on

The relay comfort functions R18 on the CEM is not getting power, this drives many of the fuses hence no steering wheel controls...

I'm not the first owner and it definately had a hit previous to me...

I don't know if the steering wheel airbag went off but it does look a little new...

It was suggested to me that the wiring behind the steering wheel may have got burnt, possibly the SWM or clock spring...

I have replaced the steering lock module and the ignition module.

I also brought power to the R18 relay via a bypass which gave me power to the steering wheel controls but this was temporary... Without this bypass the wipers remain on continuously and the Steering Wheel has not power...

Now the car won't start just keeps turning over, so I need to get some of these problems fixed asap before going near the dealer again....

Q1
If the SWM or Clock spring wiring is burnt would this prevent power to the R18 Relay via the CEM.... Which of the two is likely to be burnt? This is the biggest question, if I can locate this problem the starting problem would be easier to fix....

Q2
The car was running and decided not to start, it turns over fine but just won't start like it has no Diesel getting to the engine... I can't find any obvious faults.... (ie fuses)

Thanks very much

Dom

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