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General Car Related Discussion.To discuss anything that is related to cars and automotive technology that doesnt naturally fit into another forum catagory.
Hi lads iv got a Volvo XC90 2005 reg I live in Birmingham . Wot it is it looks like my CEM / central electronic module has gone faulty as it as iv suddenly stated getting load of faults coming on the dashboard on removing the CEM i could see rust and water marks on the bored witch is not good iv tuck it to a place that says they should be able to sort it but I'm very warred if they cannot as I could be in for a very big bill . Getting hold of a second hand one should not be a problem as long as it's not got the same problem but it would then need recoding to the car witch I think Volvo might won't to pull my pants down . So if there is any VOLVO boys out there that if all goes rong could help me out I would be for ever in your det . Thanks for taking the time to read this post and any help you could put my way
Hi mate the bord is dry but water has been getting on it for some time as some of the components have got rust showing and white round uvers and the same on some of the pins that the plugs fit on to
Luckily these were a popular car sold in high numbers so there is no end of breakers. Sad to hear it has gone wrong though as the previous owner.
Can you cure where the leak came in. RT mechanics in HASLEMERE are pretty good on this sort of thing.
Shop around as if common fault there will be a cure.
Thanks Toby I will be doing a lot of looking around to see wot I can find out . But when you phone 4 ECU repair places and the first 3 say sorry we don't touch them . And one of them has been going for 25 years
I just fort wot the hell
I think you might be best off getting a new one from the breakers and having it coded to the car. If you are feeling brave you could have it chipped at the same time as they respond well to chipping, I didn't have it done as RT Volvo mechanics said it can shorten the life of the gearbox but if you are prepared to change that for a scrap yard replacement if it goes bang then you would get over 200bhp and massive torque plus better miles per gallon. I expect they chip company could code it to the car for not a lot.
Hi lads iv got a Volvo XC90 2005 reg I live in Birmingham . Wot it is it looks like my CEM / central electronic module has gone faulty as it as iv suddenly stated getting load of faults coming on the dashboard on removing the CEM i could see rust and water marks on the bored witch is not good iv tuck it to a place that says they should be able to sort it but I'm very warred if they cannot as I could be in for a very big bill . Getting hold of a second hand one should not be a problem as long as it's not got the same problem but it would then need recoding to the car witch I think Volvo might won't to pull my pants down . So if there is any VOLVO boys out there that if all goes rong could help me out I would be for ever in your det . Thanks for taking the time to read this post and any help you could put my way
Luckily these were a popular car sold in high numbers so there is no end of breakers. Sad to hear it has gone wrong though as the previous owner.
Can you cure where the leak came in. RT mechanics in HASLEMERE are pretty good on this sort of thing.
Shop around as if common fault there will be a cure.
It was common for a short time. I used to fix them for Volvo.
Originally Posted by Caddyshack
I think you might be best off getting a new one from the breakers and having it coded to the car. If you are feeling brave you could have it chipped at the same time as they respond well to chipping, I didn't have it done as RT Volvo mechanics said it can shorten the life of the gearbox but if you are prepared to change that for a scrap yard replacement if it goes bang then you would get over 200bhp and massive torque plus better miles per gallon. I expect they chip company could code it to the car for not a lot.
NO!!!
They are matched. They are individual. H/ware.no. serial.no. s/ware.
Take it to a main dealer. DO not waste your time!!. Seen it here'd it. It will right the car off.
Had the same issue on my v70. I removed it, cleaned it with some pcb cleaner from maplins and then refitted it. Used loads of electrical grease on the multiplug and then resealed around the big rubber grommit from the engine bay side with ct1 multipurpose sealant. Has been working fine for 2 years and mine looked fairly corroded when I removed it...
Hi lads thanks for the replys very good of you all the car is still off the road at the mo as its been into a garge to be looked at and the 90% shower it's the clock cluster that's playing up so there in with a place being looked at as we speak . If it still dose not work when it comes back then the car is going to a independent Volvo dealer iv found that say on their web site they can fix all problems with the xc90 cars and they even put a list up of wot they do . So they might be getting a call very soon as I need this car back on the road asap
i used to work for ACC in farnborough..... volvos are very strange when it comes to fault codes and any sort of OBD diagnostics, unless you have VIDA your pissing in the wind
I was a Volvo Tech for 6 years. Early XC90's had that problem, water got in trough the firewall and killed the CEM. You can fix you CEM or pick up another used one and reflash it to your car. It won't run without the proper software.
Be sure to seal properly that bulkhead/firewall area or it will happen again.
Small update the car is still off the road the the CEM has been away for testing and they said. It was ok . I then sent the car in to a garage they told me 90% it was the clocks but could all so be the ABS unit . Any way I sent the clocks away to BBA REMAN
Two day past got a phone call they could not test them so that was a wast of time . Any I then rang a independent Volvo dealer and told him wot was going on well he said most of the faults I was telling him about was saying the ABS unit was the problem well that's now been sent away and iv had a phone car to say it is faulty and they have tried to repair it but it's not working so a new one is in the post to me and should be with me by Monday/Tuesday this part has all so had to be coded to my car all in price posting it back to me Ł460 . So when it's fitted I will come back on with the result
Right update time the new ABS unit turned up today so we have fitted it blead the brakes . And there is all ways one bolt that won't play / one blead nipple snapped on the rear but by pushing the piston back in it pushed the air out of the pipe . Any way the car still has most of the faults it had befor so I'm going to have to book it in now as iv done Ł550 and I'm no closer to fixing it . It comes up with anti skid service every time I turn the key on . I can clear this and it drives spot on until i turn it off and back on and the faults come back this photo shows the dash in fault and the car was running ( temp went off / Rev went off / and tacko went off . But turn the key off and back on and I just had anti skid service . This car is starting to push my pashions
Update the car has been to the independent Volvo dealer and they plugged it into a VDO reader and it lit up codes after codes and more codes . But when he looked into them there all communication codes on just about every thing on the car . The chap thinks it need a soft ware update but the only problem is it's got to go to Volvo now as there the only people that can do it . So it's booked in at Volvo erdington for Tuesday so let's see wot they have to say
Good luck mate, sorry to hear this. The car was pretty much always garaged here so prob not affected by water ingress....if that is what started it.
Hi Toby it is wot it is . I would never blame you as iv had this car over 1.1/2 years now and it's been trouble free as you had any work it needed done witch is spot on . These XC90 cars all suffer from these problems . This was the top of the CEM unit
It has been cleaned up now but only time will tell . When reading up a lot on these the amount of people that have had to have a software update is unreal I'm just hoping it's going to be as simple as that this is the list of the faults on the dash today
Anty skid service required
Abs temporary turned off
Transmission service required
Brake failure stop
No oil pressure
Immobiliser off
Limp mode
Clocks 50% turn off
But if I clear them when I start the car I can drive it as normal it's only when I turn the key off and back on they all come back on 😩😩
Well there is a update on the car today and it's not good news . The car has been into Volvo well it's still there I got the phone call at 5 tonight to tell me that the CEM is the problem they tested it two times to be 100% as it's not cheap Ł920 all in I all most fell over . I did ask if they would fit and program one if I got it witch he said they would be very happy to do this as they had done it befor and it had worked and they could do it for Ł200 but they have all so done it and it's not worked and I would still have to pay them the Ł200 and then start again so the bill could go up to Ł1100 + a CEM unit that did not work . So tomorrow I'm going to be telling them to get on with it . So by the end of this week I will of shelled out Ł1380 on sorting this out as iv all so had to put a rebuilt ABS unit on the car witch is all so coded to the car
Well there is a update on the car today and it's not good news . The car has been into Volvo well it's still there I got the phone call at 5 tonight to tell me that the CEM is the problem they tested it two times to be 100% as it's not cheap Ł920 all in I all most fell over . I did ask if they would fit and program one if I got it witch he said they would be very happy to do this as they had done it befor and it had worked and they could do it for Ł200 but they have all so done it and it's not worked and I would still have to pay them the Ł200 and then start again so the bill could go up to Ł1100 + a CEM unit that did not work . So tomorrow I'm going to be telling them to get on with it . So by the end of this week I will of shelled out Ł1380 on sorting this out as iv all so had to put a rebuilt ABS unit on the car witch is all so coded to the car
GUTTED mate. I have found a local company who specialise in soldering and I was wondering if they might rebuild it? It is worth getting the old CEM off and I can get a bloke I know there to look at it...you may be able to sell it on to someone to recoup the costs.
ASK for a deal too on the CEM, the dealer principal may just do you a favour.
Well the car is home now fixed we'll sort of . It's still got anti skid service fault on the dash 😩
It turns out the DEM unit needs replacing it controls the rear diff so as it stands the car is only 2wd 😩 . Volvo won't Ł1600 for the part WTF iv made some phone calls and all being well I should be a bull to have my unit rebuilt for Ł250 . If it needs to go to Volvo to have the rebuilt DEM soft wair updated it will be a nuther Ł90 😩 This will take the bill of getting the car sorted to a aprox Ł1800 . O and Volvo told me that this last fault is a MOT fail just as well iv got a nice MOT man at hand
Thanks lads we are all most there . Just the heads up when people think are it's a Volvo that's why they have these problems well the same ABS UNIT is on FORDS / VW / BMW / Audi . And the DEM is the same as VW and the AUDI TT . So all these cars can have you banging your head up the wall
04-07-2016, 07:13 PM
Any Volvo mechanics
