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thomas_werner69

Seat Altea Anti Theft Alarm Problem

Hoping someone can give me a clue. My 2006 Seat Altea, diesel engine, has developed an anti-theft alarm problem. There's an error stored, and the alarm system isn't working. I suspect it might be related to the car alarm being coded to activate optical locking (indicators). Any ideas?

Summary of the thread

A 2006 Seat Altea with a diesel engine developed an anti-theft alarm problem, with an error stored and the alarm system not functioning. The issue was suspected to be related to the alarm being coded to activate optical locking, which uses the car's indicators. The suggested solution involved checking alarm sensor connections and recoding the alarm system. The problem was resolved by recoding the alarm at a workshop.

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4 comment(s)

ludwigfriedrich10

Sounds frustrating! I had a similar issue with my old Renault Megane. Kept getting false alarms, especially after a power failure. Did you check the alarm sensor connections? Sometimes they get corroded or loose.

thomas_werner69 (community.author)

Alarm sensor connections, where exactly are those located? And what do you mean by 'optical locking'?

ludwigfriedrich10

The alarm sensors are usually located in the doors, hood, and trunk. They're basically switches that tell the system if something's been opened. Optical locking means the alarm uses the car's indicators to flash when locking/unlocking. If the coding is wrong, it can cause the system to malfunction. If you're not comfortable checking the sensors, it might be best to get it checked out at a workshop to avoid immobilizer issues.

thomas_werner69 (community.author)

Took it to the shop. The error code pointed to the alarm being coded for optical locking. They recoded it, and it's sorted. Cost me 45€. Thanks for the help!

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SEAT

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ALTEA