Question about 2004 Volvo C70

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2004 Volvo C70 immobilizer problems

I have a 2004 Volvo C70 HP Turbo convertible with 22000 miles. The car is serviced more frequently than required in the manual. I purchased the car at lease end and bought an extended used car warranty. The car has been very trouble free. This weekend I experienced strating trouble. It would take 3-4 cranks to turn over. I took the car to the dealership and was told the problem was with the immobilizer and that it had been damaged by overheating of the battery cables and alternator cable. They recommended that all of these parts needed replacement. When they called in the claim to the extended warranty company for approval, a series of questions about the cause of the overheating cables led to an answer that the increased heat came from increased resistance which was cause by corrosion inside the cables. The word "corrosion" became the magic word that lead to the denial of the claim and I am out in excess of $1200. Was the diagnosis and cause of cable failure correct?

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  • jchavez2 Sep 15, 2008

    My 2004 c70 also has problems starting. it will start fine , then an hour later, will take 4-5 cranks. No other pattern to its failure to start. Comes and goes. Battery is new, posts are clean, and recently had tune-up.

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I had the same issues with my 2004 C70 and it almost drove me to distraction. It would get up to about 1500 revs and then cut out. Then when I tried to re-start it it refused to start up at all. As with your car, sometimes it was just fine and others it could take half and hour before I could get it to start again. It turned out there were 2 problems. The first problem was fixed by a new rev sensor and the second by a new antenna ring. It's been fine for the last month. Volvo are aware and my excellent local dealer charged just £182 for a complete fix.

Posted on Nov 26, 2008

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