Question about 1986 Mercedes-Benz 300

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Cdcr.caq.gov1986 Mercedes 300E front power seats both left and right will not work unless door is open. Only then and will work in all directions

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Damaged harness or wiring, so when the door is open the connection is made-remove the trim at the bottom of the door opening, then pull back the carpet-look for broken or damaged wiring in the harness that goes to the seat adjuster.

worse case, you may have to remove the driver seat, it is bolted to the floor-raise it as high as it will go, and set if as far forward as possible-unbolt the back of the tracks, then do the same for the front (after you move it back)-pull the seat out enough to unhook any harnesses and remnove the seat. You should then be able to examine the harness for damage.

Posted on Apr 08, 2011

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Posted on Jan 02, 2017

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Mercedes 2003 s350 w220 central locking pump doors hoses are


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Originally in German (of course), Google is translating it.


Google Translate

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OLDTIMER Tipps fr Mercedes SL55AMG

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Hi

my knowledge about W210 (Sedan) and S210 (wagon)

Not really sure if other modles got the same location.

Battery located under the Right Back Passenger seat.

for the seadan ... you may have to remove the back seat by pressing the corner bottoms in both sides then left it up and drag it to front to got it free... you will see the battery under it.
for the wagon... open the back right door and release the bottom seat by pressing the lock handle at the side of the seat up.... seat bottom will be cimi free to be lifted to front and then you will have free access to the battery.


if you just need to recharch the low battery... you can find the charging plugs under the hood to the left side ( +) will be covered with black plastic box... open it and connect the possitive cable (red)... ( - ) will be few inches front of that to be conected with nigative cable (black)

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1 Answer

My power third row seat don't work, I tested the motors and they work fine when power directly. When I measure the voltage at the connectors I get about +/- 10 volts, from any of the 4 switches. I verified...


Your missing something's G-404 has nothing to do with it !
Seats - Third Row
The third row seat:
  • is three-passenger seat.
  • a 60/40 bench seat.
  • folds down for more cargo area.
  • has optional power fold down seats.
Third Row Power-Fold Seat
CAUTION: To prevent possible damage to the third row seat or the safety belts, make sure that the safety belts are not fastened when moving the seat to the load floor position.
CAUTION: Make sure that no objects such as books, purses or briefcases are on the floor in front of the third row seats or on the seat cushion before lowering the backrest(s).
The third row power-fold seat consists of the following electrical components:
  • right third row seat relay.
  • left third row seat relay.
  • right power-fold seat motor.
  • left power-fold seat motor.
  • right front third row seat switch (if equipped).
  • left front third row seat switch (if equipped).
  • right rear third row seat switch.
  • left rear third row seat switch.
For the third row power-fold seat to operate, a shared ground is supplied by the body security module (BSM) to both of the power-fold seat relays, enabling the seats to then be moved by pressing one of the third row power-fold seat switches. The third row power-fold seat operates only when the vehicle is in PARK and the liftgate glass, liftgate door or any entry door must be open.
The third row power-fold seat motors transfer movement to a drive gear assembly to raise and lower the seat backrest. The power-fold seat motors rotate a short drive cable which is connected to the drive gear assembly.
The relay's are located in Aux. relay box #2

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1 Answer

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