Repair TCU Mercedes

TCU Mercedes-Benz Temic - 722.8 CVT

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 Mercedes-Benz 7G-Tronic - 722.9 CVT

This TCU is an automatic transmission and was the first in 2003 with seven gears for passenger cars. These were produced for Mercedes by Continental. This TCU is also part of the mechatronics of the transmission. 

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. 

Mercedes transmission repairs:

Errors:

  • P1840 Valve Y3 / 7Y1 – PWM Solenoid Valve 1/4 shift
  • P1841 Valve Y3 / 7Y2 – PWM Solenoid Valve 3 shift
  • P1842 Valve Y3 / 7Y3 – PWM Solenoid Valve 2/5 / R shift
  • P1843 Valve Y3 / 7Y4 – PWM Solenoid Valve Lockout Clutch
  • P1844 PWM shift valve circuit
  • P1850 Y3/7N1 – Transmission RPM Sensor
  • P1858 Y3/7S1 – Starter contact block
  • P1884 PWM shift valve pressure
  • 2120 - PWM Solenoid Valve 1/4 shift
  • 2121 - PWM Solenoid Valve 3 shift
  • 2122 - PWM Solenoid Valve 2/5 / R shift
  • 2204 - Transmission RPM sensor
  • 2227 - Starter lockout contact
  • 2123 - PWM shift Valve Pressure

Errors:

  • Mercedes ERROR 1634 – Component Y3/9N1 CVT is damaged
  • Error code P0657 / P0717 / P0720 / P0722 / P0739 / P0741 / P0793 / P0794 / P0896 / P1634 / P2722 / P2731
  • Mercedes ERROR 0720 Output speed sensor malfunction
  • P1815 (0717) The rpm signal from component Y3/9b4 (CVT primary rpm sensor (continuously variable transmission)) is not available
  • 0722 The rpm signal from component Y3/9b5 (CVT continuously variable automatic transmission output rpm sensor) not available
  • P1826 The rpm signal from component Y3/9b5 (CVT continuously variable automatic transmission output rpm sensor) not available
  • 0793 The rpm signal from component Y3/9b4 (CVT secondary rpm sensor) is not available
  • P1939 The rpm signal from component Y3/9b4 (CVT secondary rpm sensor) is not available
  • 0896 Gearbox speed – faulty transmission speed
  • P2198 Transmission Speed ​​– Faulty Transmission Speed

Cars:

MERCEDES A150 (A-Class, 169) Year of manufacture 2007 – 2008
MERCEDES A160 CDI (A-Class, 169) Year of manufacture 2007 – 2008
MERCEDES A170 (A-Class, 169) Year of manufacture 2005 – 2008
MERCEDES A180 CDI (A-Class, 169) Year of manufacture 2005 – 2008
MERCEDES A200 (A-Class, 169) Year of manufacture 2007 – 2008
MERCEDES A200 CDI (A-Class, 169) Year of manufacture 2007
MERCEDES A200 Turbo (A-Class, 169) Year of manufacture 2007 – 2008
MERCEDES B150 (B-Class, 245) Year of manufacture 2007
MERCEDES B170 (B-Class, 245) Year of manufacture 2007 – 2008
MERCEDES B180 CDI (B-Class, 245)
MERCEDES B200 (B-Class, 245) Year of manufacture 2006 – 2008
MERCEDES B200 CDI (B-Class, 245) Year of manufacture 2002 – 2010
MERCEDES B200 Turbo (B-Class, 245) Year of manufacture 2007

Errors:

  • 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 internal

  • 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

Errors:

  • P07B700 - The pressure sensor signal is invalid
  • P073E00 - Reverse gear does not engage
  • P07B7 - Pressure sensor signal implausible
  • P073E - Reverse gear is defective

Repair form

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