The alarm has taken to going off without anyone touching the car ~ on a cross America trip , anyone know where the relay I need to unplug is ? .

Maybe some pictures ? .

TIA , going crazy with all the noise as are the innocent folks in truck stops , motels etc.......

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

The alarm module is located behind the kick panel on the passenger side as I recall.

1. Remove the passenger floor mat and carpet if you have both.
2. There should be a cardboard type panel on the sloped front toward the firewall.
3. I believe it takes a 10mm to remove the nuts/bolts that hold the panel.
4. The alarm module is silver rectangular shaped.
5. Unplug it.

Can someone confirm and post a pic?

Good Luck.

__________________
daw_two
Germantown, TN

Links:
Sold last car --- 05/2012 1984 300D Light Ivory, Red interior
Cluster Needles Paint
New Old Stock (NOS) parts

Past:
3/2008 1986 300SDL "Coda"
04/2010 1965 190D(c) "Ben"
& many more

THANX ! .

A pic. or description of what's stamped into it would help prevent unplugging of the wrong one .

TIA ,

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

I have an 87 300TD, many things are similar to your 126, but they may be different.

On my car it is located beneath the passenger foot space. Peel back the carpet and lift the protective covering.

It is a black box, about 2 x 5 inches, the dead giveaway is that it is made by Becker.

On my car there is an airbag safety disconnect plug in that space also, but it has a red housing. Worst case that will happen if you unplug that one by accident is that your SRS light will not shut off (except of course your air bag and pretensioner not working). Plugging it back in will rectify it.

__________________
The OM 642/722.9 powered family
Still going strong
2014 ML350 Bluetec (wife's DD)
2013 E350 Bluetec (my DD)

both my kids cars went to junkyard in 2023
2008 ML320 CDI (Older son’s DD) fatal transmission failure, water soaked/fried rear SAM, numerous other issues, just too far gone to save (165k miles)
2008 E320 Bluetec (Younger son's DD) injector failed open and diluted oil with diesel, spun main bearings (240k miles)

1998 E300DT sold to TimFreeh
1987 300TD sold to vstech

THANX ! I had all that apart last month when I replaced the blower fan and some other minor repairs .

I'll dip into it and look for the " BECKER " mark .

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better

Becker on the top And dont move the blue wire plug its for airbags .

You can try unlocking the car from another door or boot .Do this one at a time .You might have a microswitch fault on one of the door locks ,most problems are from the drivers door. But first i would remove central locking fuse ,then give it a try .The radio is wired to the alarm as well .

Thanx ! .

I'm thinking it's a front door micro switch as the passenger side key lock stopped working a few months ago and we had to work on the driver's side last Winter......

__________________
-Nate
1982 240D 408,XXX miles
Ignorance is the mother of suspicion and fear is the father

I did then what I knew how to do ~ now that I know better I do better