Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help

Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Tech Help

LinkBack Thread Tools Display Modes
Old 03-08-2006, 10:26 PM
Registered User
Join Date: Feb 2006
Location: boone, nc
Posts: 4
Unhappy 1987 260e battery drain

My wife battery died at school(she left the headlights on). A friend hooked up jumper cables and the doors locked with the key in the ignition. A wrecker service was called to come unlock the car. While waiting a man offered to try to slim jim the passenger door whick did not work. the wrecker driver arrived and unlocked the drivers door and jump started the car(this was on Friday two weeks ago). A few days later (Tuesday possibly) wife said she kept hearing something running when she would turn the ignition to the run position. I checked and found that when you would operate the door locks the vacuum pump would run a long time and the locks were not working. Iremoved the passenger door panel and reconnected the vacuum line. Also noticed that the 3 wires to the lock had some damage and the green wire was pulled out/broken at the plug. I removed the plug which partially crumbled, removed the socket from the plug and re soldered and reassembled. The vacuum locks worked again but only from the driver door and trunk. Wednesday morning the battery was dead. I jumpstarted it and sent her to school. Late Wednesday morning she called and the battery was dead. At lunch I took a new battery and installed. The old one was at least 5 years old. Thursday morning the battery was dead again jumpstarted and sent her to school. Troubleshooting time. I charged the battery reinstalled and checked voltage with the engine running = 14.1 volts. I had noticed a pronounced spark when I installed the negative cable. Removed negative cable and hooked up fluke meter for amp draw test. Meter showed about 4.5 amps. Removed all fuses one at a time and there was no change. Put back together and took it to parts store where i bought battery to let them test. their tester showed 14+ volts and 45 amps at 2200rpm. Next day I reconnected for amp test and more troubleshooting. Now the meter shows 14 to 15 amp draw for about 3 seconds then .05 amps for about 6 seconds and keeps repeating this. Started pulling fuses again and fuse C controlling anti-theft alarm system,central locking system,auto antenna,courtesy lamps and trunk lamp,radio tuner/amp. I decided to remove the passenger door panel and recheck the door lock wires. When I touched the brown(i think) wire it broke at the plug. I removed the plug and noticed I had plugged it in incorrectly when repairing the other wire. I resoldered and plugged in correctly. amp test is still the same. Checked interior lights,glove box light, trunk light, removed and unplugged aftermarket radio, removed and disconnected harness from central lock pump, disconnected harness from power antenna, removed passenger front floor to disconnect alarm module(no module just 2 harness plugs taped up). None of these changed the amp reading. I guess I need to get a wiring diagram to check any further. Could I Or slim jim man have damged something in the door lock circuit? Any help Greatly Apprediated!

Reply With Quote
Old 03-28-2007, 01:18 AM
Registered User
Join Date: Jul 2003
Location: Richmond Hill
Posts: 149
Hi there, you may have already fixed your car but I had a similar problem and it was the radio amp in the trunk that was causing a drain on the battery.

All of your problems seem to relate to the *person that damaged your car with the slim jim car break and enter tool.

Did you find the fault?

Reply With Quote


Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -4. The time now is 05:18 AM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2023, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page