Question about 2004 Mercedes-Benz CLK-Class

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How do i check the transmission fluid in my clk 320 and if it is low what type do i put in it

Posted by jlichtie on

  • Frank M. MacDonald Dec 11, 2012

    There is no dip stick. the owners manual will walk you through the steps and will read out on your dash.

  • Frank M. MacDonald Dec 11, 2012

    same as your engine oil.



1 Answer

Michael Contreras

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In order to check the fluid in the transmission you need the Mercedes Benz dip stick. It's a special tool needed for all the 722.6 transmissions. Best thing is probably to just stop by a Mercedes Independent shop where they can check it real quick. It uses a synthetic based fluid. I always go with the factory fluid.

Posted on Sep 30, 2010

  • Michael Contreras
    Michael Contreras Oct 15, 2010

    My mistake you have a 2004 clk which there is no dip stick tube. To check the fluid level it has to be done from the drain plug. A mercedes sds is needed or a scanner that will read the transmission fluid temperature. When the trans temp reaches a 27 degrees celcuis you open the drain plug and cap it off when the fluid stops running out. See the dealer for the fluid.



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After doing drain n fill of transmission is there any thing to do before and after putting fluid in 2004 mercede benz clk 320

Depending on kilos... Ive heard there is an oil filter on the sump.

Also remember the necessary fill volume varies with temperature.

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Oct 22, 2014 | 2004 Mercedes-Benz CLK-Class

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Can you assist with where the power steering resorvoir is, need to add fluid to a 2005 clk 320

On the drivers side of the engine you will see the oil filter housing and an air tube. The power steering reservoir is under the air tube.

I’m happy to assist further over the phone at

Apr 09, 2013 | 2005 Mercedes-Benz CLK 320

1 Answer

I need to put fluid in my transmission on 2006 clk 350.

usually one adds tran fluid thru dipstick tube, why would this be any differant ? with car on level surface, having not been running in the last 30 min., warm engine to normal operating temp., 5 min., pull out dipstick to see where level of fluid is, have aclean rag, donot get this fluid on car paint, be careful. wipe off stick, put back in tube, be sure its in all the way, pull it out again, see level on stick, if below fill line , add the recommened fluid type using a funnel, a little bit at a time, shot glass at a time, recheck level w/stick, DO NOT OVER FILL, OK! ( HOPE YOUR CAR HAS BEEN RUNNING THE ENTIRE TIME )

Jan 15, 2013 | 2006 Mercedes-Benz CLK 500

1 Answer

My 1999 clk 320 suddenly will not shift out of 3rd gear, its been going good for 184000 miles and all service has been done by a mercedes mechanic

sounds like the transmission is in limp home mode where it won't shift out of second gear. this is a fail safe mode. If the check engine light is on too then its probably not seeing one of the speed sensors in the transmission. Just need to have the codes pulled in the transmission control module.

Oct 01, 2010 | 1999 Mercedes-Benz CLK

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My clk 320 mercedes wont shift into gear? what is wrong?

just had the same problem today...there is a small square false door just below the D on the shift plate...the tow guy put a pen into that door and i was able to shift it out of park. now the car won't shift gears as i drive because the car is in 'safe mode'. disconnect the battery to correct. the shifting issue is still unsolved but it appears to be an electrical issue in the transmission but NOT the actual transmission. hope this helps

Feb 10, 2010 | 2001 Mercedes-Benz CLK-Class

2 Answers

Where is the trnsmission cap for clk 320 model

Hi there,

Mercedes have purposely not put a transmission dipstick in their STOP any unauthorised persons from tampering with transmission fluid levels.

Electronic transmissions are extremely temperamental - if incorrect type, level is too low (or too high), this will accelerate premature wear and tear, not to mention erratic shifting behaviour.

For this reason, only Mercedes service agents have the required workshop tool (ie dipstick) which they insert into a tube in the transmission, to check levels.

If you happen to obtain the correct tool for your own use....please ensure you use only Mercedes specified fluids....and NEVER overfill the transmission case.


Aug 16, 2009 | 1999 Mercedes-Benz CLK

1 Answer

Transmission leak

Hi, Joe here to help,
The ONLY oil you should use is Mercedes transmission oil. As far as how much to put back in, 4 qts if you do it right away, 4.5 qts. if you let it drain a while.

Apr 07, 2009 | 2000 Mercedes-Benz CLK

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