Check transmission fluid? - Mercedes-Benz Forum
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#1 (permalink) Old 06-22-2010, 07:12 AM
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Check transmission fluid?

Just bought a 2002 C240 w/ 100k miles, Is there anyway to check the transmission fluid? I asked the seller if he had changed it recently and it was a guy who had basically never opened the hood and just took it to the mercedes dealer when the computer said it needed service. According to the manual it doesnt need to be changed and thus they dont have a dip stick? but, I have been reading otherwise on this forum
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#2 (permalink) Old 06-22-2010, 01:29 PM
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A specially graduated 'measuring stick' can be purchased from MB parts desk, with a chart specific for the level of each gearbox.The ATF level is checked with the car level and the engine running, and already warmed up to 80 deg °C. This can be checked by use of an IR digital thermometer with the laser light aimed at the auto gearbox sump under the car. The level is critical, so the temperature check is essential.
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#3 (permalink) Old 06-22-2010, 02:09 PM
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I would have it drained and filled since you don't know if it's been done yet. Every 60K miles.

2005 230 K, 26k-77k (sold)
1982 300 TD, 167k-226k
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#4 (permalink) Old 06-22-2010, 02:52 PM
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Quote:
Originally Posted by nokkieny View Post
Just bought a 2002 C240 w/ 100k miles, Is there anyway to check the transmission fluid? I asked the seller if he had changed it recently and it was a guy who had basically never opened the hood and just took it to the mercedes dealer when the computer said it needed service. According to the manual it doesnt need to be changed and thus they dont have a dip stick? but, I have been reading otherwise on this forum
If he only did what MB required then I'm with the other post, CHANGE IT NOW.

If you don't want to DIY that's fine but get it done. It's expensive since the fluid is costly ($15/L) but cheaper than a replacement transmission.

There is an excellent FAQ on this 722.6xx transmission in the W210 stickies if you want to learn lots about it, read through the FAQ.

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#5 (permalink) Old 06-22-2010, 05:52 PM
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Originally Posted by gregs210 View Post
If he only did what MB required then I'm with the other post, CHANGE IT NOW.

If you don't want to DIY that's fine but get it done. It's expensive since the fluid is costly ($15/L) but cheaper than a replacement transmission.

There is an excellent FAQ on this 722.6xx transmission in the W210 stickies if you want to learn lots about it, read through the FAQ.
Fluid is probably close to a $100. I forget what I paid for a new filter, but it was probably 30 to 50 bucks. If you pay a mechanic plan on spending between 1/2 and 1 hour of labor. Regardless, shouldn't cost you more than $200 at a good indy mechanic.

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#6 (permalink) Old 06-23-2010, 06:07 AM
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Okay, I get it changed for sure, any other things that would have been over looked by mercedes that probably need to be done?
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#7 (permalink) Old 06-23-2010, 08:02 AM
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While you are getting the tranmission serviced, you might as well have the mechanic replace the seal on the TCU connector. If it's not leaking now, it will. It shouldn't add more than about $50 to the job. Also, make sure you don't have the bad Valeo radiator. If so, have it repalced as they are known to fail and dump coolant into the transmission fluid.

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#8 (permalink) Old 06-24-2010, 07:07 AM
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Originally Posted by rudeney View Post
While you are getting the tranmission serviced, you might as well have the mechanic replace the seal on the TCU connector. If it's not leaking now, it will. It shouldn't add more than about $50 to the job. Also, make sure you don't have the bad Valeo radiator. If so, have it repalced as they are known to fail and dump coolant into the transmission fluid.
I found this from another post:
FAULTY RADIATOR COOLER TANKS
Causes tranmission failure

According to Mercedes Benz Star Bulletin #P-B 27.55/50f, dated March 24, 2006, there is a problem with Valeo radiators up to production date 9/2003 installed in models:

203.040/061/064/065/081/084/261/264/281/284/740/747/746 also

How do which 203.xxx my car is?
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#9 (permalink) Old 06-24-2010, 08:25 AM
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send me a VIN number, i'll find out

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#10 (permalink) Old 06-24-2010, 01:41 PM
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Good timing with this.

I recently went to the dealer to have them flush my tranny fluid due to it acting funny and starting to have hard shifts.. They ran tests and found coolant in the trans fluid due to the radiator..

I called Mercedes, the dealer, and where I purchased the car and I'm getting no assistance at all.. They said it will be out of pocket for me.

Anyone else run into this problem and get it fixed by MB for no cost?
You would think since they acknowledged it they'd do something about it
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