Battery Cable Problems of Volvo S60

Purchased this car in 2010 with 51,000 miles. Shortly after purchase check engine light came on with service engine soon message. Car worked fine. Then brake failure message came on, brakes worked fine. Took vehicle to Volvo dealership and they found a way to "reset" system. Go in trunk, remove black battery cable, touch it to red battery cable for approx 10 seconds and the system will. We've reset the system countless times and it continues to be a problem. About 3 months ago all gauges would quit working and car would randomly brake at about 45 mph. Plus after coming to stop, car would barely move but after it got going it would be fine. Reset system and it worked for about 3 miles and happen again. Volvo mechanic found awd (dem) control module failure. Replaced this at $1500 for the part and after 50 miles, gauges still work, no random braking and acceleration is normal. But. . . . Service engine message and check engine light back on. Was told that all modules relate to each and if one is out it can affect the others. At about $1500 per module, it is cost prohibitive to replace all these, 6 to be exact. Volvo needs to recall these vehicles and replace these modules.

See all problems of the 2004 Volvo S60 🔎.

This is what is happening to me with my 2004 t2. 5 S60 Volvo. I called Volvo and they said no recalls yet I see this same thing happening to other, it has to be a defect with the car. My happens when the weather get’s hot here in California. I had no problems this winter, but yesterday it was in the mid to high 80’s and the problem happened again! no warning to the 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 fan did continue to work. 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(sometimes that doesn’t work, but if I remove the battery cable and let it set for a bit and put it back on the car will start), 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. It seems to be more prevalent in hot weather. I have taken it to different repair places and they they too many codes, reset it and it comes back again. This has been going on for over the past two years.