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This Mercedes 722.8 CVT TCM/TCU is an extremely common problem for A-Class and B-Class models.

Cuando la ECU de la transmisión falla, el vehículo experimentará una pérdida de potencia, un modo de emergencia y una selección de marcha deficiente a limitada. También se mostrará un mensaje de advertencia en el tablero: Transmisión Visite el taller.

When the Transmission ECU fails, the vehicle will experience a loss of power, limp mode, and poor to limited gear selection. A warning message will also be displayed on the dash: Transmission Visit workshop.

Common part numbers include:

A 1695451032 , A 1695451062 , A 0034462410 , A 1693700406 , A 1693700506 , A 1693700606 , A 1693700706 , A 1693700806 , A 1693701 0 06 , A 1693701106,

*Contact us if you have a similar control unit to repair, we need the trouble code(s).*

WhatsApp: +34 657 507 833

International Shipping Via DHL Express! Due to the dynamic range of shipping costs from carriers, a better price may be possible. Contact us for a better shipping price if applicable!

Common failure symptoms:

Emergency start mode / safe mode
Power loss
Warning message 'Transmission visit workshop' on the dashboard
Shift indicator on the dashboard
Do not select gears
Get underway
Output speed sensor failure
speed sensor failure



Common fault codes:

0722 - Component RPM Sensor Y3/9B5 CVT Output RPM Sensor Not Available
0793 - Y3/9B4 CVT Component Sub RPM Sensor RPM Signal Not Available
0717 - RPM signal from component Y3/9B5 (CVT output RPM sensor) is not available
0730 - The gear ratio in the continuously variable automatic transmission (CVT) is not allowed
1634 - Component Y3/9N1 (CVT (Continuously Variable Automatic Transmission) control unit) is faulty or voltage supply is faulty

Known issues that will be fixed by our repair service

Y3/9b3 CVT primary rpm sensor

Y3/9b4 CVT secondary rpm sensor

Y3/9b5 CVT output rpm sensor

Y3/9n1 CVT control unit

Y3/9y1 CVT Primary Control Solenoid Valve

Y3/9y2 CVT Secondary Control Solenoid

Y3/9y3 CVT Clutch Control Solenoid Valve

Y3/9y4 CVT Control Solenoid Valve for Torque Converter Lockup Clutch

Common fault codes are:

P 0722 - The rpm signal from component Y3/9b5 (CVT (Continuously Variable Automatic Transmission) output rpm sensor) is not available.

P 0896 - Illegal adjustment of the reduction ratio in the continuously variable automatic transmission (CVT).

P 0793 - The rpm signal from component Y3/9b4 (CVT (continuously variable automatic transmission) secondary rpm sensor) is not available.

P 0730 - The gear ratio in the continuously variable automatic transmission (CVT) is not allowed.

P 2722 - Impermissible closure of the 'Reverse' hydraulic brake on the Continuously Variable Automatic Transmission (CVT) occurred when the selector lever 'N' was engaged.

0705 – Component Y3/9b1 (CVT (Continuously Variable Transmission)) select range sensor is faulty

No additional programming is required!!! / No additional programming is required !!!

Important: After installation, recorded history trouble codes must be cleared with the original STAR tester or equivalent

Warranty:

12 months including possible shipping costs

The process takes 1 to 2 business days.

Not all modules are repairable and unfortunately, some of them are damaged beyond the point of repair.

Send in your original TCM, DO NOT send in "replacement" or "scrap" units, they will require SCN coding.

DO NOT SHIP valve body as it will increase shipping costs.

Your mechanic's responsibility is to identify the problem in the Transmission Control Module.

We do not diagnose the problem over the phone/email

Terms and conditions:

Este listado es para una RECONSTRUCCIÓN de su propia unidad.

This listing is for a REBUILD of your own unit.

Contacto:

Si su pregunta no fue respondida en este listado, no dude en contactarnos a través de mensajes de WhatsApp, ¡estamos aquí para ayudarlo! Debido al volumen extremadamente alto de clientes que atendemos diariamente, le pedimos respetuosamente que solo si tiene una pregunta técnica escriba a través de mensajes.

WhatsApp: +34 657 507 833

https://www.ecutest.eu

Contact:

If your question was not answered in this listing, feel free to contact us via WhatsApp messages, we are here to help! Due to the extremely high volume of customers we serve daily, we respectfully ask that you only write via messages if you have a technical question.

WhatsApp: (+34) 657 50 78 33

https://www.ecutest.eu

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