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Transmission trouble

19290 Views 17 Replies 8 Participants Last post by  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.

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You are a legend. Thank you so much.
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:

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.
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.
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.
Only a pleasure!

:) Only a pleasure! :)
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