Midnight Koop

I am usually on the w203 forum... but my dad's baby is a 1991 560 sec with only 35k miles... garage kept and in mint condition. he only drives it a few times a month and noticed a recurring problem with the battery... it would go dead consistently and he couldn't figure out why. this went on for years and to deal with the problem he made a habit of just disconnecting the battery when he wasn't driving it...

the other day after taking it for a spin, he noticed that the cd changer didn't turn off and kept making a humming noise after the car was off. there were no cd's in it but it continuously ran. turns out that there is probably some electrical issue with his cd player and this has been slowly draining his battery.

has anyone ever had a similar issue? he was told at the dealership that there have been similar instances where the rear speakers would never shut down after turning off the car...

any ideas on how to fix this? (other than simply disconnecting the cd player)

and... are there any electrical audio diagrams of this car that we can get ahold of?

any help is much appreciated.

thanks!

Midnight Koop

anyone?

bicylindrico

You have already found the problem. If you are saying the battery drain issue is resolved after disconnecting the CD changer, then why look into anything else? Why ask for a wiring diagrahm?

Replace or disconnect the changer.

BENZITCH

What kind of CD player is in the car?
Bruce
BENZITCH

Midnight Koop

well... i know one way to stop the problem, but that doesn't necessarily mean that it is solved. i want to be able to use the cd player in the future, so i just don't want to leave it disconnected. i also want to find out whether replacing it will do any good or just repeat the same problem.

the reason i brought this up was because i was wondering if anyone has heard of this or has any advice on how to fix it.

everything in the car is factory installed... so i assumed that maybe this could be a common defect.

Untertürkheim

This is a long shot, but does he leave his sun visors down (like to hold a sunshade in place)? I've heard of the vanity mirror lights draining the battery when they're left down.

Midnight Koop

i dont think so... but i'll check next time i go home. thanks for the thoughts...

harkgar

Meanwhile keep on trickle charging the battery.

jhodg5kc

I would re-wire the system..chances are it's been poorly done. I have yet to see an stereo installation that I thought was done Well from another shop.

Jonathan

Midnight Koop

yeah.. thats what we're doing, but its a pain in the a$$