2004 Volvo C70 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2004 Volvo C70

2004 Volvo C70 Problems

Convertible Tops May Have Problems With Micro-Switches/Potentiometers

The convertible top may have problems with the micro-switches and potentiometers that help control the raising and lowering of the top.

ABS Light Due to ABS Control Module Failure

The anti-lock brake system (ABS) Control Unit has a high failure rate. When this fault occurs, the ABS light will illuminate and codes may be stored indicating a problem with the ABS Pump Motor, or Wheel Speed Sensors, but the problem is the ABS Control Module.

Other symptoms may include an illuminated Check Engine and transmission shift light. and the speedometer may stop working as well.

Note: The brake system will operate normally however during a panic stop the Anti Lock Brakes will not work and the wheels may lock-up, causing a lack of vehicle control under these situations.

Check engine light is on due to secondary air injection system

If the check engine light is on and diagnostic trouble codes point to the air pump system, then the entire system needs to be checked.

There are a few issues that arise from the vacuum lines becoming plugged or disconnected but the most common issue is the air pump itself fails. The reason the air pump often fails is from a defective air pump check valve that allows exhaust gasses to contaminate the pump.Replacement of the air pump and check valve is necessary to address this issue.

One thing to be aware of: If the problem is not addressed eventually these exhaust gasses can contaminate the MAF Sensor and Oxygen Sensors as well, causing the engine to run very poorly and cost much more to fix.

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2004 Volvo C70 Reviews

My daughter bought a 2004 C70 from a co-worker. It ran great for about a year and then the transmission had to be repaired, the ac stopped working, the rag top will no longer open or close, this all happened within about three months. Now the lights aren't working properly. Will never buy another Volvo.
Love this car. It's a pleasure to drive and has been very reliable. I bought an extended warranty but it turned out to be a waste of money since I only had a $100 repair during the 3 years of warranty.
The convertible is great, but the car does not have a lot of bells and whistles. The interior is pretty plain, and the dashboard is basic. The upgraded sound system is fantastic. Maaintenance has been fine with the exception of the transmission needing to be replace at 69K miles. THis si terrible for a 5 year old car. Volvo, or repair shops, don't repair Volvo transmissions. They only rep...

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