Last post on Jan 30, 2012 at 10:16 AM
You are in the Volvo XC70 Maintenance & Repair
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Volvo XC70, Lights, Electrical, Wagon
#17 of 22 Re: 2005 XC70 electrical failure [lmkaufman]
Aug 03, 2009 (4:43 pm)
Same problem here - does anyone have a solution?
I have a 2004 XC70 wagon, 80,000 miles
It has the same electrical problems described.
The car will suddenly ‘buck' for a second as if it stalled or is trying to downshift. I'm pretty sure it is trying to shift. The inside lights will go on, and a ‘left door open' message will appear. Sometimes the dashboard lights and indicators will go out as well.
The transmission was flushed by the dealer for the first time at about 70,000 miles. It was dirty at that point according to them. 75,000 mile service was performed, and the software upgrades were done.This was about 6 months ago
The problem continued after the service, once the weather got hotter (in New Jersey) One volvo dealer had no idea, another said it was a $ 1,200 + problem:
‘Fault trace to internal fault in DIM P/N 8602763, 8633289' The first item is the dashboard assembly for $900, I can't find any info on the second part.
From browsing I have picked up the idea it is the ECU. From other posts, it sounds like I should have the transmission flushed and check for software upgrades. I am not planning to attack this myself. I'm looking for clues to discuss with a mechanic.
Has anyone successfully fixed this ??
#18 of 22 xc70 intermittent electrical
Aug 12, 2009 (10:00 am)
This seems to be very similiar to my 2004 xc70. This only happens after 5-7 hours of highway driving, which is only 2-3 times a year. There is no indication anything is wrong and it does sort of feel like a thud, but is likely the engine momentarily stalling or the AWD system reponding to the electrical problem. The red triangle immediately appears with the messege that the left rear door is ajar, with of course it is not and the interior lights illuminate...because it thinks the door is open. This will occur every 2-5 minutes 2-3 times until the cem shuts down which leaves the vehicle in "limp" mode, driveable, but without many systems. In my case usually if you pull over stop, turn the car off for a couple of minutes and restart all is normal, except for the codes that relate to some of the system failure that have nothing do to with the original cause. the dealer wants to replace the cem, but a good local independant says in 20 years He's only replaced 2 of these and one had obvious extermal damage..they want to start checking the systems one at a time?? Volvo must by this time be aware of the problem and possibly a solution?.....but they're not telling. the previous post about the s80 with the alternator make sence, but it could be anything on the electrical network causing voltage problems....please post any updates
#19 of 22 Re: xc70 intermittent electrical [dean36] Seems RESOLVED!
Aug 12, 2009 (10:20 am)
I found a good independent in Freehold, NJ: Pro Vo Vo. They also thought replacing the CEM would be unusual, but after some extensive testing they did replace it for about $900 total parts & labor. Results after 2 weeks and 500 miles are EXCELLENT. The behaviour both of us experienced is gone. Also, I always felt the transmission was sluggish. This has also cleared up. I would let them change the CEM.
This may be a chicken or egg thing with the voltage. A computer chip should not 'wear out' like a moving part, although a defect may take time to appear. I suppose a voltage swing could burn it out or weaken it.
For now, I am glad the CEM was replaced. The first dealer said nothing was wrong, the second wanted over $1,200 to replace the instrument panel, but couldn't explain how that would cause the problem. (i declined)
I agree Volvo should be more helpful
Keep me posted.
#20 of 22 2004 Volvo V70 with identical problems
Jun 28, 2010 (9:44 pm)
Our Volvo V70 has had the exact same problem -- after driving at highway speed for many hours, it will lurch, the engines will rev, the interior lights will come on, and I'll get a "Left Rear Door Open" error.
Once the problem starts, it'll continue and usually worsen. The latest time I would completely lose power to the dashboard (lights off, gauges at zero) and get an error message that my brakes and airbags had failed.
We've taken it to a couple of dealers and independent mechanics, but no one has had a solution (or even experienced the problem). I'm not sure it's worth $1000ish to fix, though, if ti really requires a new CEM.
#21 of 22 Re: 2004 Volvo V70 with identical problems [brojd]
Jun 29, 2010 (4:28 am)
It was well worth it for me. I have driven the car for almost another year since the CEM was replaced, and zero problems. I don't understand why a $10 computer chip costs $1000 to replace, but it did do the job.
#22 of 22 2009 XC70 RSE fuse
Jan 30, 2012 (10:16 am)
Second time now the RSE has gone out; anyone know where the fuse is and the amperage? Rather fix it myself than pay a dealer to replace one fuse ....