Alarm & hood switch. - The Unofficial BMW M5 Messageboard (m5board.com)

fess · 4th October 2006, 19:28

My alarm goes off randomly when it is hot outside. I fiddled with the hood sensor and suspect that may be the problem.
Any problem if I just disable the switch by uncliping the power lead to it?

AOM5 · 4th October 2006, 21:49

No problem with doing that (other than the obvious that the hood won't be protected). FYI, it's also a ~30 part, maybe a bit less if I remember correctly.

ELEVENS · 4th October 2006, 22:15

You can most certainly bypass the switch. However, it's a "normally open" type of switch, which means when the hood closes, the circuit cecomes closed.

So to bypass the switch you need to jump the two wires with a paperclip. Don't forget to wrap tightly with electrical tape.

///Mr. Five · 5th October 2006, 00:06

Where is the hood switch on the beast? I suspect my random alarm activation may be caused by this as well.

Thanks!

ELEVENS · 5th October 2006, 03:31

Quote:

Originally Posted by ///Mr. Five

Where is the hood switch on the beast? I suspect my random alarm activation may be caused by this as well.

Thanks!

Same problem I had. The switch is located on the driver's side, mounted on the front side of the cabin filter.

RJM-M5 · 5th October 2006, 03:36

Check the part of the hood where the sensor touch's, maybe its worn enough to allow the switch not to fully depress? Just a thought?

socalbuckeye · 30th October 2006, 03:19

Did this fix it for you?

I have been having a similar problem. Alarm goes off randomly after it sets for a while (a couple of hours or so). Took it to the dealer and they said all the sensors checked out and there was nothing they could do.

Vindicator · 30th October 2006, 05:42

Try disconnecting the hood switch. It worked for me. I didn't need to jump the wires however.

Beamer_usa · 30th October 2006, 06:06

Quote:

Originally Posted by Vindicator

Try disconnecting the hood switch. It worked for me. I didn't need to jump the wires however.

X2