PeachParts Mercedes-Benz Forum - View Single Post - M-103: too many issues for the title...

tinypanzer · #9 01-05-2010, 12:34 AM

Battery drain can be the stupid factory alarm system. They always seem to act up when it gets cold, too.

Lift up your front passenger carpet and take it out. By the footrest area, there's a plastic cover panel secured by a 10mm nut that may have already broken the plastic around it. Remove the nut if necessary, and the panel.

To the left, you will see a wedge shaped black box that says Becker Autoradio if the sticker hasn't fallen off by now. It has two plugs that attach on the left side, one large, one larger. Remove them both. Alarm is now disabled, and this is a GOOD thing.

Also check to make sure the light in your glove box and trunk are shutting off.

OVPs can be a pain. I replaced the one in my 300 just because I didn't want to run into OVP problems. The replacement gave me problems after one month, and I'm running the original again.

Don't give up on your 300SE. They're great cars, and leaks can be fixed (mostly). Hit me up if you need any advice.

AWW CRAP. Just saw that you said 300E not 300SE. Still a great car, but not sure if any of what I said about the alarm location/deactivation is accurate.