Under the carpet in the left hand side foot well (passenger in the UK), next to the red airbag unit. Car is 300 TE-24. It was disconnected when I discovered it btw.




I'm assuming it audio related as it's made by Becker, though there is no Becker player installed?

It's actually the alarm/security system controller.
The system tends to drain the battery when the car sits.
If it's disconnected then it's not a problem as the system may have been malfunctioning which is common.
I've had mine disconnected for years !

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http://i19.photobucket.com/albums/b1...c/GOWIDE-1.jpg
1971 280SL ROADSTER
1988 300CE TWIN TURBO WIDEBODY
1994 E320 CABRIOLET
1999 C43 AMG
2005 G55K AMG
2008 CLK63 AMG BLACK SERIES

This is a control unit for the infra-red closing system.

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600SEL '91
300E 4Matic '88
240D '83
280SE '77
350SE '73
The most complex systems can fail in the simplest way.
Contra verbosus noli contendere verbis, sermo datur cunctis, animi sapientia paucis.

i don't believe in the lord! He's never bought me a Mercedes Benz.

Thanks for that. Cars already got Clifford immobiliser/remote locking, so I'll leave it disconnected.