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Mercedes-Benz transmissions & drivetrains repair questions and answers

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  • amiram kolizky
    amiram kolizky - 1996 Mercedes Benz S320 - Transmissions & Drivetrains - 12/8/2010
    Transmissons delade engagmenl
    revares delaede engagment
  • ken
    ken - 2001 Mercedes Benz E430 - Transmissions & Drivetrains - 12/7/2010
    My car seems to slip out of gear when accelerating
    my local garage told me it could be something to do with a sensor, help!
      3 primary things make a transmission slip.Torque converter failure,the internal clearances between your steel plates & friction disks may be too much and instead of grabbing when the piston is applied they "slip". Less common, but not unheard of is a stuck valve in the valve body. It may only actuate part way.
  • Kathleen Wheeler
    Kathleen Wheeler - 1997 Mercedes Benz C230 - Transmissions & Drivetrains - 12/2/2010
    Why won't the car shift out of low gear?
    The car will not shift out of low gear.
    • darkmind
      12/2/2010 darkmind
      What have you done so far to fix your vehicle? Did you already check your transmission shift cable and bracket? Also a defective/damaged main control separator plate/main control solenoid can also cause it. If possible diagnose your vehicle with a scan tool to determine if you have a stored trouble code and to check if all your electrical controls and sensors in your transmission are working fine.
  • wjeffcoat
    wjeffcoat - 1989 Mercedes Benz 560SL - Transmissions & Drivetrains - 11/26/2010
    Car develops a vibration in engine or transmission area when engine is accelerated to 1900 rpm's.
    Auto begins viabrations appx. 1,900 rpm until 2,400 to 2,500 rpm's. The viabrations develop whether static or moving. SL 560 has 160,000 miles. Runs very good. In effort to stop viabrations, mechanics have replaced engine mounts, universal joints (?) and have ...
      11/24/2010 MOONSTER_TOOLZ
      Vehicle vibration is one of the difficult to diagnose because it occur in any driving conditions and caused by various faults. Engine vibration is may be caused by a belt-driven accessory, or a gear-driven component that is out-of-round, out-of-balance. It can also be caused by piston slap, excessive valve lash, excessive bearing clearances, deformation of parts under stress, crankshaft and camshaft deformations, etc. Other than that are vibrations caused by normal engine operating characteristics such as: cylinders firing events, rocking motions, crankshaft deflection, exhaust pulsations, etc. All engines have vibrations which are a normal part of the engine running; however, they should not be felt in the passenger compartment. I to check the clearances of the engine parts that may require an engine overhaul. Pulleys have to be checked also including the flywheel performance and harmonic balancer.
    • wjeffcoat
      11/26/2010 wjeffcoat
      Thanks for your answer. It sounds like it may be " to much candy for a nickel"., in other words, more work than it's worth.
  • cbqmein
    cbqmein - 2006 Mercedes Benz C230 - Transmissions & Drivetrains - 11/25/2010
    What electrical part helps your transmission work?
    car down shifts into manual shifting mode while driving in automatic mode.
    0 answer
  • Tina Clark
    Tina Clark - 1995 Mercedes Benz E320 - Transmissions & Drivetrains - 11/23/2010
    Why does car go into all gears except Reverse?
    150, 000 miles If possible, please reply today (Nov 23rd)
    • Autobahn
      11/23/2010 Autobahn
      For no reverse gear concerns, it can be any of the following:

      Improper fluid level, the transmission shift cable broken or mis-adjusted, fluid filter damaged or plugged, improper band/clutch application pressure, main control assembly gaskets damaged or bolt out of torque, main control separator plate damaged, pump assembly bolts out of specifications, reverse clutch burnt, worn, or leaking, direct/reverse servo piston seal cut/leaking.

      Dont be surprised though if you alreasdy need to replace your tranny or get it overhauled.
  • Ramigon
    Ramigon - 1998 Mercedes Benz ML320 - Transmissions & Drivetrains - 11/14/2010
    Changing replacing automatic transmission fluid is not necessary for this vehicle?
    If changing automatic transmission fluid is recommended or required, how often (miles)?
    • Nissan Technical Advisor
      Yes, your transmission fluid will wear with time and its efficiency will become less. Normally, every 60,000 miles but others do it earlier as a precaution. Your manual dictates how many mileage it will require to change the transmission fluid.
    • Sam
      11/14/2010 Sam
      How can I check tranny fluid in 1998 Mercedes ML320?
  • joljol
    joljol - 1996 Mercedes Benz E320 - Transmissions & Drivetrains - 11/12/2010
    Gear is not shifting into 5th gear intermitently.
    0 answer
  • emmanuel
    emmanuel - 1987 Mercedes Benz 300E - Transmissions & Drivetrains - 11/10/2010
    What is the proper transmission oil to use
    • Cracker
      11/10/2010 Cracker
      For MB manual transmission

      MB Manual Transmission Fluid MB part no. 000 989 26 03

      For power steering

      MB Power Steering Fluid MB part no. 000 989 88 33

      For MB automatic transmission (not including MB automatic transmission W5A580, model 722.6), transfer case (4MATIC), and MB manual transmission (except GL76/30-5 and GL275E) use:

      Castrol Dexron-III/Mercon ATF F-30341
      Castrol Transmax M-22257 / 22096
      Chevron ATF Dexron III F-30108 / 30159
      Citgo Multi-Purpose ATF D-21571
      Exxon Superflo ATF Dexron-III F-30111
      Havoline ATF Mercon/Dexron-III F-30321
      Pennzoil, ATF D-21380
      Pennzoil, ATF F-30110
      Quaker State Dexron-III/Mercon F-30161
      Sunoco ATF Dexron-III/Mercon F-30176
      Texaco ATF Mercon/Dexron-III F-30321
      Unocal Multi-Purpose ATF D-22413 / 22431
      Valvoline ATF Type D

      Supplier Information:
      Castrol, Piscataway, NJ / Toronto, Canada
      Chevron Products Co., San Francisco CA
      Citgo Petroleum Corp., Tulsa, OK
      Exxon Company USA, Houston, TX
      Texaco Lubricants Co., Houston, TX
      Pennzoil Products Co., Houston, TX
      Quaker State, Seneca, PA
      Sun Co., Philadelphia, PA
      Unocal Science and Technology Div., Brea, CA
      Valvoline International, Lexington, KY

      For MB automatic transmission W5A580, model 722.6 and Model 163 transfer case use:

      MB Automatic Transmission Fluid MB part no. 001 989 21 03 10

  • Joe
    Joe - 1989 Mercedes Benz 190E - Transmissions & Drivetrains - 11/5/2010
    Reverse doesn't always work
    can this be just an adjustment and if so aproximately what would it cost?
      11/5/2010 CARLOSSILVA
  • Robert
    Robert - 1999 Mercedes Benz E320 - Transmissions & Drivetrains - 11/4/2010
    Oil level to the max
    I had the transmission oil changed with 4 quartz of oil and the next day I got a warning "oil level is to the max". At one time the car would not budge on drive til I played with the gear and put it back to drive. How can I fix this problem?
    • HKS Guy
      11/4/2010 HKS Guy
      Easy, remove some oil to bring it back the proper level..either that or your sensor is busted. Now the next question would be how, well as far as i know the dealer has a special pump /with fitting that suck the fluid out.
  • davie
    davie - 2006 Mercedes Benz C280 - Transmissions & Drivetrains - 11/4/2010
    Gear Selector Lever Operation
    when the gear selector is pressed to the left in the D- direction the transmission does not shift from the current gear to the next lower gear, it always shifts to 1ST gear, it does however shift sequentially in the D+ direction.
    0 answer
  • adversalorc
    0 answer
  • gamstarinc74
    gamstarinc74 - 1992 Mercedes Benz 500SEL - Transmissions & Drivetrains - 11/2/2010
    Why the engine stops when i press the accelaration
    • Black Ops
      10/31/2010 Black Ops
      When the car stalling is gradually frequent as the first time it was happened, the possible cause is that the car is suffering from a vacuum leak. Vacuum leak often start out small and gradually becomes worst due to pressure inside the car engine.

      The vacuum created in the car fuel system is one of the key factor in determining how much fuel the car engine will get, any leak in the car fuel system vacuum will affect the air/fuel mixture that enters the car engine combustion chambers, this will result to car stalling.

      In this case you do not have any option but to bring the car to a reputable auto repair shop and ask the mechanic to check the car for a vacuum leak, particularly the EGR and the PCV valves, as this two items are often to be the source of vacuum leak.

      When car stalling is not gradually become frequent over time and also occurred not only during cold wet weather, the only possible problem of the car is a bad throttle position. Fuel injected engines have a throttle position sensor, a device which measures how far a driver pressed the gas pedal and thus the throttle. The position sensor feeds the data to the engine computer that does the calculation the resulting data is used to determine precisely how much gas the fuel injection system should inject into the engine. If the throttle position sensor provides a wrong data to the engine computer it will adversely affect the injection of gas into the engine causing the car to stall when accelerating.
    • Mikhelin
      11/2/2010 Mikhelin
      Replace all VALVE units....thus will make your engine runs new. not in the engine valves..i'm talking about PVC to cold start valve moreover idle valve, all valves.
    KARTCONNECTION - 1997 Mercedes Benz E420 - Transmissions & Drivetrains - 10/31/2010
    • david
      10/31/2010 david
      have trans service change filter and use some tran x or tran medic after seriving or may have to rebuild or replace if that dont fix it
      10/31/2010 david
      could be vent stop up because fliud went all over the place could dirt dober built nest over vent on top of trans
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