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Mercedes-Benz transmissions & drivetrains repair questions and answers

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  • eric
     
    0 answer
  • Mike Bowles
    Mike Bowles - 1991 Mercedes Benz 420SEL - Transmissions & Drivetrains - 2/1/2011
    In reverse, jerky motion and engine roughness
     
    0 answer
  • thecam
    thecam - 1990 Mercedes Benz 420SEL - Transmissions & Drivetrains - 1/30/2011
    NONE OF FORWARD GEARS ENGAGE, REVERSE DOES
    Driving vehicle, stopped to get into traffic and then it would not move forward. The only gear that engages is reverse. When shift to drive, car "sits" like it is engaged, but will not move forward. I have been told it could be neutral switch, linkage or gear box ...
     
    • J and K AUTOMOTIVE TOWING AND REPAIR
      check your transmission fluid level also could be theses

      # Low or no fluid
      # Worn or damaged torque converter splines
      # Worn or damaged Pump
      # Worn damaged clutch pack assemblies
      # Worn or damaged neutral safety switch
      J and K AUTOMOTIVE TOWING AND REPAIR
      1/31/2011 thecam
      OK...the fluid level was fine. I would like to start with what sounds to be the easiest first. Where do I find the neutral safety switch? The Pump sounds like the next easiest thing...where is it located? The torque converter splines and the clutch pad assembly both sound like they are inside the transmission. Am I correct? I do not have a repair manual and have not been able to find diagrams for any of this online. Please advise..thank you for your help so far.
      J and K AUTOMOTIVE TOWING AND REPAIR
      2/11/2011 thecam
      Hello Joe...you had been kind enough to answer my question on 1/30/2011 and I sent a follwoup question on 1/31/2011 but ther was never an answer posted. I have copied the 2nd question again in hopes you or someone else will respond. Thanks!
      OK...the fluid level was fine. I would like to start with what sounds to be the easiest first. Where do I find the neutral safety switch? The Pump sounds like the next easiest thing...where is it located? The torque converter splines and the clutch pad assembly both sound like they are inside the transmission. Am I correct? I do not have a repair manual and have not been able to find diagrams for any of this online. Please advise..thank you for your help so far.
  • david
    david - 2000 Mercedes Benz S500 - Transmissions & Drivetrains - 1/30/2011
    Have a strong vibration above 1800 rpm and after 30 mph fell it throughout car in the seat of your pants possible drive
    checked rubber disks at front and rear of drive shaft good condition thinking center support bearing is this serviceable
     
    0 answer
  • shagg
     
  • john
    john - 1987 Mercedes Benz 300E - Transmissions & Drivetrains - 1/24/2011
    How many gears does my car have?and at what speed does the last one kick in?
    I count three gears from the moment of take off until I reach 65-70 mph does it have a fourth gear other than passing gear?
     
    • HPI Blitz
      1/24/2011 HPI Blitz
      The W124 has a 4-speed automatic. Here is the problem, your concern is not DIY, you have to bring it to a mechanic. You will be lucky if all you need to do is replace oil and filter...anything more than that, you need a pro
  • Ann
    Ann - 2001 Mercedes Benz C240 - Transmissions & Drivetrains - 1/19/2011
    The locks in the back do not operate with remote
    When the remote is used to open the car, the back locks do not open. They can be manually operated (for opening & closing) but will not respond to the remote or central locking system
     
    • Donut
      1/19/2011 Donut
      Does it make a popping noise when you hit the button? It can be that the the remote switch is broken

      Scroll down and you will see a PDF file with the information that you need

      The file name is: Trunk Lid Opening Problems
  • ladydi1593
    ladydi1593 - 1991 Mercedes Benz 500SL - Transmissions & Drivetrains - 1/19/2011
    I have a transmission fluid leak, though it might be the seal. Had someone replace fluid, filter, still leaking.
     
    • J and K AUTOMOTIVE TOWING AND REPAIR
      yes it could very well be the seals you will have to look and see if you can pinpoint were its coming from............good luck
      J and K AUTOMOTIVE TOWING AND REPAIR
      1/19/2011 ladydi1593
      Thanks, the guy who did this said that he believed the nuts and or bolts were not tight enough, but still leaking. shifts okay.
      J and K AUTOMOTIVE TOWING AND REPAIR
      1/19/2011 Bill
      What do you mean he believed? Why doesn't he know? He was under vehicle, wasn't he?
  • prince7860
    prince7860 - 1997 Mercedes Benz E320 - Transmissions & Drivetrains - 1/17/2011
    Transmission stuck in first gear
     
    • ASE MASTER MECHANIC TEXAS
      Is it a standard tranny or auto...... how long has it been like this. .. Is this car driven hard???
      if standard,, do you have a normal clutch, or soft?
      If auto, will it move????
  • CHASE353
    CHASE353 - 1997 Mercedes Benz C230 - Transmissions & Drivetrains - 1/17/2011
    When you put in in reverse or in drive it jerks real hard.ALSO IT WONT SHIFT UP OUT OF FIRST GEAR
     
    • Nissan Technical Advisor
      CHeck the transmission and engine mounts if broken/damaged and inspect the vacuum modulator if defective. You will need a transmission professional for this problem,
    • ASE MASTER MECHANIC TEXAS
      Your inside main gear assembly has most likely locked up to the slip-out lock up converter module.
      I bet the car has over 80,000 miles on it. has it been drove hard or like a baby,, honest answer please.
      Now, you can have the pan removed, and see if you have lots of metal shavings, of all kinds of metal.
      I f you do, you need to pull the filter and take a good look and smell of it. Don't be scared, it is just like a ford or chevy.
      you can smell of it too and tell if it is burnt up if it is black and stinks bad. Should be red and smell like crisco kinda.
      will it go into second and still go down the road, or not at all???????????
      ASE MASTER MECHANIC TEXAS
      1/18/2011 CHASE353
      IT WONT SHIFT OUT OF FIRST GEAR AT ALL.NO MATTER WHAT GEAR SELECTION YOU PUT IT IN.WE TOOK IT TO A SHOP AND THEY RAN A DIAGNOSTIC ON IT AND SAID THE CONDUTOR PLATE IN TRANNY WAS BAD.BUT THEY DID SOMETHING TO IT THAT MADE IT SHIFT AND IT SHIFTED GOOD FOR ABOUT FOUR MONTHS.NOW ITS BACK TO THE WAY IT WAS.
  • ficklingt
    ficklingt - 2002 Mercedes Benz S430 - Transmissions & Drivetrains - 1/12/2011
    Gear shift sticks in park when attempt is made to shirt to drive.
     
    • yboy82
      1/12/2011 yboy82
      Did you already try to diagnose your vehicle with a scan to determine if the fault isn’t one of your electrical controls or sensors? If your vehicle’s problem is already resolved how did you do it?
  • ficklingt
    ficklingt - 2002 Mercedes Benz S430 - Transmissions & Drivetrains - 1/12/2011
    Gear shift sticks in park when attempt is made to shirt to drive.
     
    • yboy82
      1/12/2011 yboy82
      Did you already try to diagnose your vehicle with a scan to determine if the fault isn’t one of your electrical controls or sensors? If your vehicle’s problem is already resolved how did you do it?
  • jamesarod
    jamesarod - 2004 Mercedes Benz CLK320 - Transmissions & Drivetrains - 1/12/2011
    Vibration when turning right over 30mph and car jerk
    feel a vibration when the road bears to the right at speeds over 30mph. driving the car pulls slightly to the left as well. i have a 2004 clk320 with tiptronic and as of late when the car just drifts at 15mph and i touch the gas or release that it starts to jerk ...
     
    • Donut
      1/12/2011 Donut
      "driving the car pulls slightly to the left as well" - first impression is an alignment issue
      "car just drifts at 15mph and i touch the gas or release that it starts to jerk and i feel the transmission sort of rattle." - first impression is busted tranny support

      For the vibration concern, it MAYBE a wheel bearing issue, jack your car up and wiggle it, if it moves top to bottom and side to side then the wheel bearing is busted.

      Also check your axles for any rips or leaks...
  • shingleback
    shingleback - 1992 Mercedes Benz 500SEL - Transmissions & Drivetrains - 1/11/2011
    ATF leak on rhs of vehicle; fluid pools when car sits for a few days. Coming from above pan gasket (new and not leaking)
     
    • Nissan Technical Advisor
      You have to locate the source of the leak, remember low fluid in operating gears produce a problem, check if the power steering fluid if low, and the transmission fluid also. ATF can leak from the poser steering pump and hoses, also from transmission pan when gasket fails, so check it out and send it to shop for repair before major damage occurs.
  • benz c280
    benz c280 - 1994 Mercedes Benz C280 - Transmissions & Drivetrains - 1/9/2011
    Location of overdrive relay switch
    will not engage in overdrive , all other gears are good
     
    • Donut
      1/9/2011 Donut
      Have you checked the trans fluid level? if level is good, nex thing you have to do check shift fuse in fuse panel, now, if fuse good, the trans screen may need replacement or it can be that the fluid could be bad and needs drained and replaced. Lastly, if none of those you need a transmission repair.