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magdalenastern28

Seat Formentor Security Alarm Problems

I'm officially losing my mind. My 2020 Seat Formentor with a gasoline engine is throwing a fit. Got almost 181000 km on the clock and suddenly the security alarm is completely useless. Keeps storing error codes and the whole anti-theft system is down. My gut tells me it's something with the alarm control, maybe related to the immobilizer but I'm stumped. Anyone seen anything like this before? I'm pulling my hair out over this false alarm situation.

4 comment(s)

norbert_meyer7

Security alarm acting up huh? Sounds like a headache. Did you check the battery in the key fob? Sometimes a weak battery can cause weird issues with the immobilizer.

magdalenastern28 (Author)

Key fob battery? Interesting thought. Would that really cause the main security alarm to go haywire, storing errors and disabling the whole anti-theft system?

norbert_meyer7

Yeah, it's a common thing with these. I've heard of the alarm system getting confused when it's coded to activate the indicators upon locking, but that function isn't working correctly. Causes all sorts of problems. Probably best to take it to a workshop, they can recode the alarm control.

magdalenastern28 (Author)

You were spot on! Turns out the alarm was coded for optical locking which wasn't working right. A quick recoding at the shop and 45€ later, it's all sorted. Thanks for pointing me in the right direction!

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