[W126 Coupe] BATTERY DRAIN

Vance Rowley vance.rowley at tiscali.co.uk
Sat Jun 20 07:48:49 EDT 2009


Most of the things that a professional mechanic or auto electrician would check for a battery drain (at least at first) can be checked by yourself as long as you have a very basic knowledge of electricity and a multi-meter.
No codes would tell you or locate a battery drain. A few more details are required to help you locate the problem.

1. Are you sure that your battery itself is OK?
2. How long does it take to drain the battery enough not to start the next time with the car just sitting?
(Several hours, overnight, two or three days?)
3. What is the battery voltage with ignition off while at rest?
4. What is the battery voltage with the engine running?
5. How much of a current draw are you getting from the battery with ignition off?

If you could answer at least some of the questions and provide a few more details of the symptoms and what you have checked so far, I am confident that this group can help you to some degree, and might even be able to offer a solution.

Regards,

Vance.
----- Original Message -----
From: clay
To: MBCOUPES at MBCOUPES.COM
Sent: Friday, June 19, 2009 8:59 PM
Subject: [W126 Coupe] BATTERY DRAIN


Hi Guys,
Out of hospital again, it's getting to be like going to get the SEC fixed. Broke ankle on both sides and couldn't get surgery do to the block cloth that made me fall. Enough of that, I and my son still can't find drain but when I went to start the last few times the wipers come on for a couple of sweeps, Could the drain be in ignition switch or the stalk or horns or column ? The shop I used to tune the 450SLC for emissions test charges $89.00 per hour. I guess I'm wondering how long a Mercedes shop w/trained mechanics would take to locate drain (ball park). Is there a plug in for codes on a 1988 SEC ? Any info highly appreciated especially Dick, He's helped me alot.
Thanks Alot,
Clayton Moizo
Scottsdale,AZ
If anyone wants to call in in bed again for at least another month or 2.
Home 480.368.1217
Cell 480.268.0791


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