Car Alarm When Opening a Door

R18ARX

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Aug 5, 2024
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A Class 220D / 2021 / 2L
Hi all,

Has anyone ever had a problem with the car alarm sounding after opening a door? It sounds for around 20 seconds then goes off, but it sometimes starts sounding again straight away.

It is intermittent so doesn’t happen all the time, it also happens with more than just 1 door.

Took it to a local garage but it the Alarm didn’t sound and also no codes came up on the diagnostic computer.
 

Blobcat

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Grange Moor
Your Mercedes
R171 SLK280, Smart R451, Land Rover 110 County SW, 997 C2S, R1250 GSA TE 40th, CBR600FP
I’d check that the battery in the alarm hasn’t corroded and started doing strange things
 

AMGeed

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Poole, Dorset
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1998/2001 W210 E280 x2 SOLD 2004 W211 E55 SOLD, 2014 E63 Biturbo SOLD .S204 C180K
I’d check that the battery in the alarm hasn’t corroded and started doing strange things
I'd be a bit miffed if its corroded already and its a 21 plate car!
 

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