vladc77

I hope I am not into trouble at least for now. I checked the car with STAR diagnostic tool and got the following faulty readings:

0717 The signal from component Y3/8n1 (Turbine speed sensor(VGS)) is not available.

0718 Component Y3/8n1 (Turbine speed sensor (VGS)) is defective.

It seems it is not a cheap fix. However, these readings are for 2 years already. The car still runs great except that sometimes I have to restart the engine if I lost power after temporarily stop of the car (on red light for example). It happens once a months or so. I am wondering how I can cure this issue without paying absurd price to the dealer to replace a sensor. It seems that it is not complex procedure except that it requires SNC coding. I heard that some do SNC coding outside dealer. Any ideas are highly appreciated!

alx

Ignore for now.

vladc77

Thank you! I am planning to to do fluid change and was wondering if it is something that makes sense to do at the same time.

alx

Tranny fluid is done once at 39-40k miles. Leave the tranny alone after that until your conductor plate burns out then replace when and if it happens.

vladc77

Do you mean I should just change the fluid for now and wait until conductor plate will fail? BTW, I did not look repair instructions yet. Do I need you drain AT fluid while the conductor plate is being replaced?

One more thing, I heard that dealer will not sell conductor plate without replacing it at their facility. In other words, they force you to do repair only with them. Is that possible to get OEM conductor plate somewhere else? The dealer also says that the conductor plates for European and other markets are different. Can be this true?

Thank you again.

BlownV8

How many miles are on your GL?

vladc77

I have about 75K.

alx

yes, the oil pan needs to be dropped to replace the conductor plate.

this means you consequently need to refill the tranny and the process is not very straight forward as it loosely resembles dialysis

also once the plate is replaced the tcm needs to be reset as it will not adopt the new plate otherwise. this can be done with das or any scan professional scan tool that can communicate specifically with the tcm and issue a reset command.

cheapest oem parts (imo) are at parts.com.

vladc77

Thank you Alex. Your assistance is always good help. What TCM is referring to? Do I need to have SNC access to complete repair? MB strongly reccomeds to do it at their repair center but it quite costly without warranty. I want to do it myself. Is that too ambitious?