TCU Mercedes-Benz Temic VGS 722.8
The TCU Temic VGS 722.8 is a CVT model that often requires repair in the Mercedes A- and B-class. These models were produced between 2003 and 2013. The mechanics of ABS-Stuurapparaten from Heemskerk are familiar with the various actions and revisions that are necessary to make the CVT or TCU of your Mercedes drive optimally again.
TCU repair on a Mercedes : Possible electronic error codes
In a Mercedes TCU repair, there are two aspects that determine the mechatronics: mechanical and electrical. The operation of the CVT is controlled by mechatronics. The mechanical part is the labyrinth of channels and valves that control various components within the CVT. The electronic part is the Temic VGS. If error codes are stored here from the internal speed sensors, this is a very good indication of a defective transmission control module. When the ECU of your vehicle is scanned with diagnostic equipment, you will see the most common error code:
- 2722 Impermissible closing of hydraulic brake
- 2723 Impermissible opening of hydraulic brake
- 2731 Impermissible closing of hydraulic clutch
- 2732 Impermissible opening of hydraulic clutch
- 0722 speed sensor Y3/9b5
- 0793 speed sensor Y3/9b4
When one of the above error codes is read, it is almost inevitable not to carry out a TCU repair on your Mercedes .
Possible Error Codes
The most common problems and error codes with the automatic transmission:
Mercedes A-class W169 & B-class W245
- Consult transmission workshop: Display
- P0793 – Y3 / 9b4 The speed signal (CVT (continuously variable automatic transmission) speed secondary sensor) is not available,
- P0722 – Y3 / 9b5 The speed signal (CVT (continuously variable automatic transmission) speed secondary sensor) is not available,
- P0896 – Invalid CVT setting range,
- P0794 – Display of the secondary sensor of the revolutions (Y3 / 9b4), exceeded maximum value,
- P0717 – Y3 / 9b3 signal rotational speed element (CVT (continuously variable automatic transmission) rotational speed primary sensor) not available
- P0794 – Display of primary sensor revolutions (Y3 / 9b3), maximum value exceeded,
- P0730 – Gear ratio in continuously variable automatic transmission CVT not permitted,
TCU Mercedes-Benz 7G-Tronic
This TCU is an automatic transmission and was the first with seven gears for passenger cars in 2003. These were produced for Mercedes by Continental. This TCU is also part of the mechatronics of the transmission. When this is scanned by the diagnostic equipment, the following error codes may appear:
Possible Error Codes
- 0721 – The signal from component Y3/8n3 (Output speed sensor VGS)
- 0717 – The signal from component Y3/8n1 (Turbine speed sensor VGS)
- 0722 – The signal from component Y3/8n3 (Output speed sensor VGS)
- 2767 – The signal from component Y3/8n2 (Internal speed sensor VGS)
Y3/8N1 – Turbine speed sensor
- P0717 – The signal from component Y3/8n1 (Turbine speed sensor (VGS)) is not available
- P0718 – Component Y3/8n1 (Turbine speed sensor (VGS)) is defective
Y3/8N2 – Speed sensor inter9n
- P2200 – The signal from component Y3/8n2 (Internal speed sensor (VGS)) in not available
- P2201 – Component Y3/8n2 (Internal speed sensor (VGS)) is defective
- P2767 – The signal from component Y3/8n2 (Internal speed sensor (VGS)) in not available
- P2768 – Component Y3/8n2 (Internal speed sensor (VGS)) is defective
Y3/8N3 – Speed sensor output
- P0722 – Output Speed Sensor No Signal
- P0723 – Output Speed Sensor (VGS) is defective
Y3/8S1 – Switch position sensor
- P0705 – Transmission Range Sensor Circuit Malfunction
- P2716 – Pressure Control Solenoid “D” Electrical
TCU Mercedes-Benz 9G-Tronic
Symptoms of a damaged 9G-Tronic control unit: Errors related to: turbine wheel speed sensor, internal transmission speed, output shaft, parking lock position sensor, solenoid lubrication pressure, clutch control, multi-disc brake control, working pressure and inverter locking clutch.
Possible Error Codes
- P07B700 - The pressure sensor signal is invalid
- P073E00 - Reverse gear does not engage
- P07B7 - Pressure sensor signal implausible
- P073E - Reverse gear is defective
What is our service based on?
Repairing the control unit in Mercedes means diagnosing and eliminating all problems and malfunctions that may occur in this system.
- Troubleshooting: The first step is to identify a problem with the transmission control or other ECU-controlled functions. This could include error messages on the on-board computer such as a transmission error message, shifting problems or other irregularities.
- Reading Trouble Codes: The technician reads the trouble codes from the ECU's memory, which can provide information about the cause of the problem. Diagnostic Tests:
- Diagnostic tests are performed to check the operation of various transmission components, such as gear position sensors, solenoids, speed sensors, and more. This helps determine the specific cause of the problem.
- Repair or replace damaged components: If a damaged component, such as a sensor or solenoid, is identified, a technician can repair or replace that component.
- Software Updates: Often ECU software updates can resolve certain transmission issues. A technician can perform a software update to improve performance and eliminate bugs.
Repairing the controller can be a complex process, requiring advanced knowledge and suitable diagnostic tools. Therefore, it is generally recommended to use the services of a qualified technician or workshop specializing in Mercedes-Benz vehicles.
Make an appointment for the diagnosis of your car
Do you want a TCU repair for your Mercedes? Then make an appointment at ABS-Stuurapparaten in Heemskerk, the specialist in electronics. Our technicians repair the determined Error messages in your transmission . Do you have any further questions or would you like to know more about our working method ? Please contact us via our contact form .
We provide a 2-year warranty on a repaired part.
The part you send us will be repaired. Because you get the same part repaired back, you avoid unnecessary installations and coding of your vehicle.
