BMW M Roadster alarm problem

BMW M Roadster alarm problem

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Discussion

BigG

Original Poster:

9 posts

238 months

Wednesday 16th November 2005
quotequote all
Hi all,

Firstly I drive a 1998 BMW Z3 M Roadster, 82000 miles on the clock, great car; but I have a problem.

I approached the car this morning to go to work and flicked the grey button on my keyfob (i have a keyfob seperate to the key, one grey button, one red button), but the car didn't unlock/disarm. I tried a bit closer to the car, still nothing. Moved round the back of the car, nothing.

The LED is lighting up ok on the keyfob, i've also tried to spare keyfob to no avail.

I unlocked the car manually, opened the door, alarm went off; so I took the opportunity to pop the bonnet. I managed to disable the alarm by removing the 25A fuse for the central locking. I think my battery backup must be dead, because the alarm died.

However, i'm now without left sidelights or central locking.

It appears the side light fuse had blown, so I went to Halfords and replaced it - only to have the alarm start going off again (tried the keyfob, no joy), so I had to remove the new 10A fuse and 25A fuse again.

I'm really stuck for ideas as to what is wrong, can anyone help? Is this a common fault? Does anyone know where the receiver is for the keyfob signal? It looks like it may be this that's at fault. I would imagine the alarm system would be very similar to the system that's on the E36 or E36 M3, as the M roadster shares the same bits n pieces.

I've checked the obvious, including:

Boot lid closed properly,
Doors closed properly,
Bonnet closed properly (the bonnet button for the alarm still triggers it),
All fuses for central locking / anti-theft system

The only thing worth noting is there was a hard frost on the car this morning, the first time since last winter.

Many thanks in advance.

G