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V70 Alarm System Malfunction

I'm experiencing an issue with my 2010 Volvo V70, gasoline engine, with 153641 km on the clock. The anti-theft alarm system seems to be malfunctioning. I get an error stored in the error memory, and the alarm system itself is without function. I have checked the fuses, but that did not resolve the issue.

The 2010 Volvo V70 is experiencing a malfunction in its anti-theft alarm system, with an error stored in the memory and the system not functioning. The issue may be linked to the car's optical locking feature, which can interfere with the alarm system. The suggested solution is to have the system checked and potentially recoded by a professional, which resolved the problem in this case.

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4 comment(s)

Hey there! I also own a V70, and your problem sounds awfully familiar. Have you had the car coded to activate optical locking, meaning the indicators flash when locking/unlocking? That can sometimes mess with the alarm system. Does it happen randomly or is it constant?

Thank you for your reply. I'm not entirely sure about the optical locking; is there a way to check this, or would it require diagnostic equipment?

Okay, so the optical locking thing... yeah, you'd need a VIDA/DiCE unit to properly check if it's enabled in the car's computer. Honestly, given the symptoms and that you've already checked the fuses, it really does sound like a software glitch related to the alarm settings. I ended up just taking mine to a workshop to get it sorted. They re-flashed the alarm module and it's been fine since. Save yourself the headache and let the pros handle it.

I appreciate the advice. I took it to a workshop, and they confirmed that the alarm system was coded to activate optical locking, which was causing the issue. They recoded the system, and it cost me 45€. Thank you again for your help!

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VOLVO

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V70