Two problems related to software have been reported for the 2004 Volvo XC70. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Volvo XC70 based on all problems reported for the 2004 XC70.
Complaint centers on a 2004 Volvo Xc70. After a minimal amount of online research, I find that there are many owners with similar problems. Recently, after driving vehicle past initial "warm-up" stage an electronic anamoly occurs at random intervals, at speeds ranging from 1 - 65 mph. The anamoly always involves a sudden "jolt" as if the transmission slipped, and is also characterized by various other electronic occurrences. These can include "left rear door open" light, all interior lights illuminating, driver's seat heater turning on, "srs airbag" urgent message, "brake failure" notification, and loss of all dashboard instrumentation including lights and turn signals. Any one of these occurrences are an immediate attention-grabber while behind the wheel and create a situation detrimental to safe vehicle operation. This particular vehicle is now at an authorized Volvo dealer for the second time (had to be towed the first time) for the same problem. Dealership performed software update first visit which did not fix problem. Now dealership thinks it may be central electronics module, a $1000+ fix, which may or may not correct the problem.
The events leading up to the failure of my vehicle (which has occurred 4 times in the last 9 months) are described in this Volvo recall. However, my Xc70 is a 2004 but is having this identical issue. (a software glitch is responsible for 11,993 Volvo models being recalled by the national highway traffic safety administration (NHTSA). The campaign includes model year 2008-2010 s80 models, 2010 s60 models, 2009-2010 Xc70 models, and the 2010 xc60, all running faulty software in their central electronic modules (cem). According to NHTSA, the signal from the cem may fail to reach the fuel pump electronic module (pem), inhibiting the fuel from reaching the engine even as the vehicle's throttle is depressed. Normally, this would just result in an engine that fails to start. However, residual pressure in the system may allow the vehicles in question to drive a short distance before the engine quits. . . And if the vehicle stalls in certain conditions, a crash could occur. ) I took my car to the local dealership and was told to replace the cem at a cost of $1200. 00 and that they wanted me to know that they were not even sure this would fix my problem.