CL500 722.6 Issue.....PLEASE ANY ADVICE

nkotecha

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Hello Forum

I am pulling my Hair out trying to figure out what is wrong with my Car - I will start by a short history then the Symptoms.

**HISTORY**

Approx 4 weeks ago, I noticed some juddering whilst enagaging into Drive, so I took it to my dealers, and they told me that I had water contamination in my Transmission. They recommended a Filter and Fluid change.

Approx 100 Miles after the above change, I lost gears totally (Can rev whilst in Drive) - So I had the Car towed back to the Dealer, who again said that a Filter and Fluid change would be advisable, as some contamination would have been left in the Torque converter. At this point I declined. I decided that I will do this myself, So I air blasted the pipes after removing sump - and lots of gunk came out - Put a new Filter and Fluids - it ran nice for 300 Miles and then again died (same problem as above)

Spoke to a Transmission Specialist, who said that once Water had contaminated these boxes, it is time for a rebuild as the water dissintegrates some sort of Band or Clutch (cant remember), however I sourced another box from a Reputable Breaker whom said he had a Box from a 21K car, with Torque Converter. So I chose the replacement option. - I was there when they removed my old box!!!

HOWEVER - guess what - it died on me again.

**SYMPTOMS**

I get a whizzing sound in a all modes (P R N and D, in S and C), however the weird thing is that if switch the car off, and start after 5 mins, I get gears for about 5 seconds then gone again! - Occasionally I would start the car , and it takes a few seconds to get into gear (almost trying to build pressure).

I have put on STAR - all Modules OK (EGS, and TCM)

NOW I am lost for thoughts, and would really like some pointers........

PLEASE Any Advice!!!!!
 

television

Always remembered RIP
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Your Mercedes
2002 SL500, 216 CL500, all fully loaded
If you have water in the box that can only come from a leaking oil cooler did not anyone mention this
 

amb67

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Your Mercedes
Mercedes-Benz C220 Coupe AMG, E320 CDI (S211), Aprilia RSVR
When you replaced the gearbox did you replace the torque convertor?

If no, that's your problem.

I take it you had the Valeo radiator fitted to your CL, appears to be a common problem. MB say that you should flush them out and do the filters but in my experience it hardly ever works.

You don't mention having the radiator replaced, if it's not been done then you may have damaged the replacement gearbox.

Bad news is that the torque convertor is around £1000 for a CL, not something I would buy secondhand.

Let me know if you need anymore help or advice.
 


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