Question about 2000 Mercedes-Benz S-Class

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Mercedes S430 trunk won't open

2000 Mercedes S430 Manual trunk release wont work. Car has power and door locks are working.

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You have to stick the key in the trunk and turn it to the lefy while hittin the unlock button on the key pad 35 times has to be 35 and it will unlock. my battery died and it locked the trunk as u know i coudn't jump it cause the battary is in the trunk haha but yeah 35 times while hitting the key. mercedes wont tell u but my buddy works for inskip and filled me in your o so welcome from one s430 owner to another

Posted on Dec 30, 2012

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6ya6ya
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Posted on Jan 02, 2017

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csmock132
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SOURCE: mercedes/dead battery can't open trunk help

There should be a positive charging post under the hood. Hook up jumper cables to this post for positive and the engine for ground. Then get in the car and pop the trunk with the trunk release button.

Posted on Mar 08, 2009

  • 15 Answers

SOURCE: 2002 mercedes s500 trunk will not open

Hi there
First of all may i say i feel your pain. literally. the same thing happened to mine. here is what i did
Firstly i needed into a locked boot urgently (for wifes wheelchair)
so i cut a rectangle out of the boot put my hand in and pulled the release mechanism, that worked but left me with a hole in my boot.
I suggest that you try this instead.
remove back seat
the central locking pump is located next to the battery (black box with yellow air lines going into it.)
Unplugg the filler cap cover air line, then unplugg the boot air line and put it into the filler cap cover socket.
now when you unlock the car the boot should automatically open.
If it does not the problem it on the boot air line and you should strip the trim out of the boot to check, but you still have to get in and may have to do what i did initially.
If changing the air line worked then you will soon get tired of having to shut the boot everytime i solved this problem by routing the filler cap air line to a pnuematic switch (LEGO) This switches between the boot and the filler cap. bit naff but it works and cheaper than having to replace pump and have computer and keys re-coded total cost around £600.
op that helps

Posted on May 01, 2009

  • 1 Answer

SOURCE: Mercedes-Benz 320clk coupe 2002 with dead battery

Posotive can be found in hood driver side next to fuse box. It is a small rectangle box. You can hook negative to any solid ground on the car.

Posted on Jun 14, 2009

  • 1 Answer

SOURCE: trunk release for 2000 mercedes s 430 not working properly

Trunk can be lock separate from the doors valet try unlocking the trunk with the key lock it with the door.Read the owner manual it will tell you about valet parking.

Posted on May 20, 2009

  • 203 Answers

SOURCE: mercedes s430 wont start car wont shift out of park

is check engine light on or visit workshop displayed on cluster while engine is running. If so there is a electrical malfunction-although if the linkage is disconnected from the trans to the throttle the gear recognition switch would send an implausible signal and set a code. this code is not a priority code and may not set the light right away. A lot of times one of the linkage rod retaining clips falls off. Look under the car and you will see a rod that attaches to the shifter box arm and to the transmission neutral safety switch(manual valve) arm. It may actually be resting on the ground. If not look and make sure it is secure. Next there is a slot on the shifter wood where you can put a flat blade screw driver in and release the manual shifter lock. Your owners manual will describe how to do this. Depending on what failed the vehicle may be in what is called limo home mode where the trans does not shift out of second gear and the throttle is not very responsive. It will give you the opportunity to move the car to a safe location possibly even a repair shop. The shifter boxes are are a sealed unit with no replaceable parts. They are slightly expensive and require an s.d.s. machine to replace because they must be programmed and version coded. I hope I have been helpful

Posted on Jul 31, 2009

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My trunk won't open, I have tried my trunk button and the key won't work, it worked fine a few hours, but even when i try to do it manually it won't open. Also I would look in and try the...


There are 3 phases to fixing your car's trunk lid release problem.

Phase 1: First check the fuse - once you know that's OK, then proceed to phase 2 (below).
The fuse for the trunk lock is
the bcm (pwr) 15A fuse in the instrument panel fuse box (behind panel at drivers right foot)

Check that fuse, as it is the power supply for the button on the dash that sends power to the actuator in the trunk.

Phase 2: Get the trunk open (without taking it to the dealership).
If you have remote keyless entry to the trunk, you could try that - but with the actuator
dead/dying, it shouldn't work.

Here are a couple of ideas to try to enter trunk while (a) actuator isn't working, and (b) all
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There is the lock cylinder, which you stated is not functioning - put the key in, and it doesn't
turn. Just to be sure, consider: lubricate key with Graphite lock-type lubricant, and retry.

The trunk has 2 valet safetys...the locking rear seats which require access to the trunk to unlock, and then there is a valet switch in the trunk that locks the button on the dash from working to keep valet parking attendants out of the trunk. That may be in the lock position.

You can try accessing the center area of the fold down rear seat and see if you can unhinge the rear seat from there. Maybe reach in with your hand, or an extension-type tool.

there may be a way to fold the hinge away from the seat back so it can be removed from the hinge and give you access to the safety latch in the trunk and open it that way (white handle in trunk).
The white-handled safety latch release is desiged to prevent accidentally trapping children, and
if you can pull it with your extending-type or grasping-type tool, the trunk will open whether or
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Phase 3: Replace the Problem part.

Your failed part may be either (1) Trunk Release Relay, or (2) Trunk Lock Release Switch

My Satrun ION manual doesn't cover either of these parts, and the online parts houses, e.g.
http://www.rockauto.com/catalog/x,carcode,1431624,pgname,Electrical-Switch%2B%2526%252338%253B%2BRelay,a,search.yahoo.com%2BSearch%2Bfor%2B2004%2BSATURN
fail to provide instructions. One of those times a mechanic has to t=rely on his/her native
handiness and/or experience.
To identify which of these parts is bad, locae the Trunk Release Relay (call your dealer parts
dept. for helpful tips on finding it), then operate the dashboard trunk release button with your
ear close tothe relay - if it makes a noise, the problem is the Trunk Lock Release Switch in
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Hi, if all of the locks on your Mercedes fail to open (or close) first check your key fob to make certain that its battery is working. Replace the worn out battery, if necessary. If key fob is working, you may have a faulty key fob, which can be repaired or replaced by taking it to your dealer.
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You likely have a shorted door lock actuator, which you can replace with a new unit for the lock that is not working. If a door unlocks, but will not lock again, then replace the door switch.

Besides there is not OBD II 888 code, i have never heard or seen it before...

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1 Answer

Trunk release for 2000 mercedes s 430 not working properly


Trunk can be lock separate from the doors valet try unlocking the trunk with the key lock it with the door.Read the owner manual it will tell you about valet parking.

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