Question about 1998 Mercedes-Benz E-Class

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1998 Mercedes Electrical / Electronic Issues

1998 Mercedes E320 with random electrical / electronic issues. The malfuntions occur in groups.

This group malfunctions most frequently and at the same time:
Driver's side seat,window, and mirror.

Next functions to quit are:
Passenger side seat, window and mirror.

Next and least frequent functions to quit are:
Power locks, front interior lights, power sunroof,and radio (power-amp only).

I can temporarily restore all functions by briefly disconnecting the battery and reconnecting it, or by removing and replacing the fuses that affect the non-working components.

There is not a regular pattern as to when or why the outages occur. Please help!

Dave Francis dtfrancis@comcast.net

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  • 2 more comments 
  • dtfrancis Aug 14, 2008

    The car is 1998 Mercedes E320.

    The fuses DO NOT BLOW, I remove and replace the same unblown fuses. It's like re-booting a computer or series of computers.

  • dtfrancis Aug 14, 2008

    This car has been looked at by my local dealer to no avail. Several independent mechanics have also been ineffective. Is there someone in the Nashville, Tn. area that might be competent with Mercedes electrical stuff?

  • Anonymous Mar 16, 2014

    mercedes sprinter. can the front passenger seat and base be easily removed and refitted regularly?

  • Anonymous Apr 01, 2014

    electric windows do go up and down also electric front seats arnt working

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5 Answers

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Hi,

From all indications, most of your devices are controlled by a common module. This would be similar to the engine management computer but has the responsibility for all those mentioned and then some. if you would notice, most if not all are non essential to the engine's performance. Initial suspect would be such a module and/or the sensors, connectors to it. Being such as multi input and multi output, it is perhaps to your advantage to seek the services of a qualified professional. If you are considering a DIY (do-it-yourself), then access to a full service manual would make things doable if not easier.

Often this control module would be under the dash or on any of the kick panels.

Hope this be of initial help/idea. Pls post back how things turned up or should you need additional information.

Good luck and kind regards. Thank you for using FixYa.

Posted on Aug 14, 2008

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To find a repairmen in ur location u can just enter ur zip code on REPAIR SERVICE column mentioned on the fixya home page.

Posted on Aug 14, 2008

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  • 623 Answers

It's better for you to take it to a mechanic the Mercedes E320.
is a serious machine

Posted on Aug 14, 2008

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  • sandip panchal
    sandip panchal Aug 14, 2008

    u have to go with a professional mechenic

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  • Mercedes-Benz Master
  • 19,396 Answers

It is a contact or lose connection, when this affects many device you can start checking wiring with a tester from the fuse relay box.

Posted on Aug 14, 2008

  • Ginko
    Ginko Aug 14, 2008

    Check what fuses are blowing, do it with a tester. If the contact is random it is difficult to find it out when happens, a way to diagnose the problem is disconnecting the affected devices one by one and going for exclusion in troubleshooting the error:

    Start unplugging Driver's side seat,window, and mirror connectors and see if you have the rest of troubles again.

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