[Jay Kay]

Hi Everyone

I have a 2000 CL600 with 265 000Kms. The car is as new, and very well maintained.

Recently, I have run into problems with the transmission. The car will not shift out of second gear into third. I can feel it shift from first to second.

I have scanned it and have the following printout:

110 - The speed comparison of Y3/6n2 to Y3/6n3 is sporadically implausable. (Resistance too low)

116 - Component Y3/6s1 (Starter lockout contact) or component Y3/6b1 (Transmission oil temperature sensor) is sporadically faulty or both. (Resistance too low)

146 - The transmission has sporadically an impermissable transmission ratio. (Resistance too high)

147 - The gear is sporadically implausable or the transmission slips sporadically. (Resistance too high)

151 - the gear comparison is sporadically negative or the target gear has sporadically not been achived. (Resistance too high)

I have access to a workshop, so I would like to tackle this on on my own, and provide pics of the procedure. Any asistance with this matter is most welcome.

:thumbsup:

 

[Check Codes]

You're in limp mode.

A good place to start is by reading the excellent 722.6xx FAQ thread that you can find in the W210 forum stickies. (It's the same transmission.)

You can check your TCM for signs of fluid incursion; if it's wet, then the pilot bushing (adapter/connector) has leaked. The fix is to replace the bushing and remove and clean the TCM and its corresponding socket, then reassemble, set the fluid level, and clear the codes.

That should be checked in any event.

However, with the codes you're getting, it sounds as though your conductor plate needs to be replaced. That will require a fluid change (a good idea anyway) and dropping the valve body. Pull the pilot bushing before dropping the valve body.

That's all covered in the FAQ thread (and the links in it).

Have a read through that information, if you have further questions, post back.

Good luck.

 

[geekhou05]

Agreed that it is the conductor plate. Same issue (different verbiage) on my W140 with the same 722.6 transmission.

Cheers!

 

[Jay Kay]

You are a legend. Thank you so much.

 

[geekhou05]

PS - while replacing the conductor plate, I would also replace the following:

TCM Connector Plug/Bushing!!!!
ATF Fluid, Filter and Pan Gasket
ATF Cooling line to the radiator.

You may have to connect the car to a Star Diagnostic System to clear the codes after replacing the conductor plate.

 

[stobe]

Hi Everyone

I have a 2000 CL600 with 265 000Kms. The car is as new, and very well maintained.

Recently, I have run into problems with the transmission. The car will not shift out of second gear into third. I can feel it shift from first to second.

I have scanned it and have the following printout:

110 - The speed comparison of Y3/6n2 to Y3/6n3 is sporadically implausable. (Resistance too low)

116 - Component Y3/6s1 (Starter lockout contact) or component Y3/6b1 (Transmission oil temperature sensor) is sporadically faulty or both. (Resistance too low)

146 - The transmission has sporadically an impermissable transmission ratio. (Resistance too high)

147 - The gear is sporadically implausable or the transmission slips sporadically. (Resistance too high)

151 - the gear comparison is sporadically negative or the target gear has sporadically not been achived. (Resistance too high)

I have access to a workshop, so I would like to tackle this on on my own, and provide pics of the procedure. Any asistance with this matter is most welcome.

:thumbsup:

Check the condition of the transmission fluid. It should be red. If it's brown or black and/or smells burnt, it's a sign that the maintenance schedule of the transmission has not been followed.

 

[Marsden]

Excellent work gentlemen! And my congratulations to the OP
for achieving 265,000Km on his CL!

 

[Jay Kay]

Transmission repair!

With the help of this forum, I was able to get my car running again.

I removed the valve body, stripped and cleaned every component, replaced the conductor plate and the electric plug connector.

I then changed the filter and added 6,5l of new ATF. I drove for 50km, and then stopped at a dealer to check the fluid level. They topped off the system with no more than 250ml of ATF and sent me on my way.

The car is running as good as new. Thank you to all that contributed with advice, and links. It is very much apreciated. I am happy to assist anyone who experiences the same problem.:thumbsup:

 

[mrgold]

Hello i am having the same issue i have a cl 500 2002 91k, it is stuck in limp mode.

the battery was weak and cause it to go into limp mode temporarly but as the battery got worst and didnt work i jumped my car and now it stuck permanently in limp mode so i put in a new battery but it is still in limp mode.

how much did it cost to fix the connector plate ?

thank you for your help and time.

 

[Jay Kay]

Transmission

Hello Mr Gold

The total cost was around $ 500.

That was for the Conductor plate direct from Mercedes, and for 8 bottles of transmission fluid, new filter and electrical connector.

 

[mrgold]

thank you so much for the info.

i wil take my car to my mechanic today, do you have any recommendations on that issue ?

was your car out of limp after you changed the plate?

thanks a million for you time and help.

 

[Jay Kay]

I had no trouble going into limp mode after I did the transmission work. I had all of the codes removed before I started work. Once I was done, the car was perfect again.

I can see that the plate was the problem as there were cracks in the sensors.

 

[mrgold]

do you think if i only remove the codes the car would get out of limp? or its after all the work that the car is back normal?.


thank you very much i appreciate your help a lot and sorry for asking a lot of questions but i am very new to this type of problem.

thank you so much!

 

[Jay Kay]

I would have the codes removed, and then drive the car. If it goes back into limp mode, scan the car, and get the codes. We can then find the problem, which may not be the conductor plate.

 

[mrgold]

You were completely right J thank you very much for your help and guidance.
erasing faulty codes by das and mb specialist did it.
The dead battery caused all kinds of crazy signals that caused the computer to throw it into limp mode.

the mb tech told me that he had to reprogram everything, that the transmission didn't know where or when to shift and erase all codes.

For now i drove the car for about 15 miles and everything seams to be working perfect even better than before because the new battery, this cars really need the battery to be tip top.

thank you so much for your help and time once again, ill keep you updated if the problem comes back or any changes after das erasing the codes.

 

[Jay Kay]

Only a pleasure!

Only a pleasure!

 

[tun tun]

Hi Everyone

I have a 2000 CL600 with 265 000Kms. The car is as new, and very well maintained.

Recently, I have run into problems with the transmission. The car will not shift out of second gear into third. I can feel it shift from first to second.

I have scanned it and have the following printout:

110 - The speed comparison of Y3/6n2 to Y3/6n3 is sporadically implausable. (Resistance too low)

116 - Component Y3/6s1 (Starter lockout contact) or component Y3/6b1 (Transmission oil temperature sensor) is sporadically faulty or both. (Resistance too low)

146 - The transmission has sporadically an impermissable transmission ratio. (Resistance too high)

147 - The gear is sporadically implausable or the transmission slips sporadically. (Resistance too high)

151 - the gear comparison is sporadically negative or the target gear has sporadically not been achived. (Resistance too high)

I have access to a workshop, so I would like to tackle this on on my own, and provide pics of the procedure. Any asistance with this matter is most welcome.

👍

 

[tun tun]

151 errer