2004 S60 2.5T

KimbiVolvo · Post by **KimbiVolvo** » 31 May 2011, 10:46

**I copied and pasted from some complaints I found online as this is the same issues that I'm having with my Volvo. Everything in quotation marks are copied/pasted, but I added a few additional things that my car does.

2004 VOLVO S60 2.5 TURBO: “No warning to these events. On numerous occasions, the car feels as if it has hit a large object, temporarily lurches and appears to momentarily stall creating a temporary loss of vehicle control. This is followed by an immediate loss of all instrument gauges, air conditioner, window controls and door locks. The ABS warning light also indicated as well as a warning that no brakes function existed. THE SRS service air bag urgent indication is illuminated. On turning the car off and restarting, the functions of the car return with exception that the SRS service air bag urgent indication remains. This problem can take months to repeat or only a matter of minutes.” After the car does this if I stop at a light and when I go to accelerate the car is slow to get moving again. As well when the car jerks the passenger back door open light will come on along with the inside lights, soon after that I lose all panel lights, etc. When I open the door and close it back the lights go off or if I’m at a place where I can turn the car off and back on the panel light and inside lights will go off. Every time the car jerks this reoccurs. I took the car to the Advanced Auto because I was told that it could possibly be the alternator since all the panel lights, etc go haywire, but it was found that I don’t need a new alternator. There were several codes that were given: P0600, P0803, P2188, U0073, P0571C and P0503. Where should I start? I won’t be able to take it to the Volvo dealership because of finances, but if there is something that I can do and start with an outside mechanic I will do that.

Thanks in advance for any advice.

Post by **jimmy57** » 31 May 2011, 11:47

The problems you list all point at the communications network having shorted wire or a faulty module. A dealer or a very good independent shop with computer tools that will read ALL codes would be who needs to have the car. The code readers at parts stores is emissions codes only and will not read the codes that may point directly to a cause.

FCPEURO · Post by **FCPEURO** » 31 May 2011, 17:16

+1

I am thinking it is a bad computer somewhere in the cars network. Unfortunately, a dealer is going to be in your future.

blinkings60 · Post by **blinkings60** » 05 Jun 2011, 01:58

Have a 2004 s60 2.5T as well, This problem is the same as what I have had for over 2 years. usually only happens when it is hot outside (+ 95 F) I hear a slick click or shorting sound then all instruments in the cluster lose power, the SRS warning comes on, sometimes the brake warnings come on as well, sudden violent lurching, all electrics go offline. This usually happens from 4 to 11 times in a row, even after turning off the engine. I happened 7 times today. Have had both Volvo Service, and a certified Volvo 3rd party garage tell me they cannot trace it as usually it acts 'normal' when I take it in for a diag. I have read this might have something to do with an overheating ECU due to poor solder on the board, or poor airflow. To date I have spent over $600 on diags to chase this problem, and as of yet not found the root cause. My thought is that I may have my 3rd party garage replace the ECU.

For information for the 1st poster. The alternator problem is STRICTLY an autoparts store trying to get you to buy something you do not need. If Volvo Mechanics cannot tell you what it is, an auto parts guy certainly cannot. The sluggish acceleration is "limp mode", it is supposed to be a safety feature so you don't get stuck in the middle of traffic and can limp to the side of the road. I wouldn't drive it that way for long as the electricals are all off line and the engine may well overheat as the fan is not on. The lurching you feel is the engine actually losing power for a second before limp mode kicks in. To date I have found many MANY people that have exactly the same issue as you and I do. In the state of New York there is a Lemon Law claim against Volvo representing people due to the electrical issues described.

Problem: Electrical issues unknown to Volvo, and they do not seem to care to fix them
Solution: ?? I have already had the Immobilizer replaced and keys recoded, this did not fix the issue. My Next Step is the ECU replacement (Strictly a guess on my part but hey I can't do any worse than the dumb looks I am getting from Volvo). If an ECU replacement doesn't do it I might flip a coin to replace the DIM, or take this POS to the dealer and trade it.

KimbiVolvo · Post by **KimbiVolvo** » 06 Jun 2011, 10:51

Thanks for the reply...regarding the alternator...the auto parts store told me that I didn't need a new alternator--it was just an assumption from what I explained to them so they thought that it was "probably" the cause especially with all the lights, etc going haywire. When it was detected that it wasn't they suggested a shop that does electrical work on Volvos vs taking it to the Volvo dealership. The violent jerk scares me almost to death as it comes out of no where and will keep doing it...and then some days it may not do it at all.

I really want to find out what is wrong with it because I really love my Volvo and don't want to get rid of it....but it's not doing me any good sitting my garage. I don't drive it much because I'm afraid it will just conch out on me in the middle of my rurual town.

Post by **jimmy57** » 06 Jun 2011, 13:04

To repair a problem like this usually the "frozen values" have to be looked at and the time information studied. The occurence information MAY hold clues. If ll the values are the same and the codes all set simultaneously then other things will have to be done.
The worst part is if it not consistently happening.
SOme of the modules can be bypassed using jumpers if they are pass-through modules. Others can be unplugged to see if the problem stops.
There are two networks. Hi speed for ECM,ABS,TCM, and CEM. Cars with ETM's add that part to this network and cars with electronic AWD have that module on this network also.
The low speed network has the CEM (it is on both), PDM, DDM, UEM, REM, CCM, AUM, DIM, SWM (through 2004), SRS, and the nav system when equipped.
High speed going down will kill all in the DIM but warning lamps and fuel gauge. Windows will operate and Fan will blow but compressor goes off. On models with ETM, the throttle is not going to respond.
Low speed will kill windows, turn signals, Fan, DIM is dark except for parking brake warning, locks will not work.