Mercedes · 2000–2008

Mercedes C-Klasse-W203 Control Unit Repair

Is the control unit in the Mercedes and C-Klasse-W203 (2000–2008) faulty? We repair ABS control units, airbag control units, engine control units and instrument clusters for this model. Revonik tests and repairs the original unit fitted in the vehicle at component level — significantly cheaper than a new part, within 2–4 working days and with a 24-month warranty.

Repair orderContact
  • 24 monthsWarranty
  • Diagnostic check €69credited against the repair cost
  • 2–4 working daysStandard repair
  • Original unitnot an exchange part

Compatible control units for the C-Klasse-W203

All control units fitted to the Mercedes and C-Klasse-W203 and repaired by the Revonik.

ABS control unitfrom €199ATE MK25 ABS control unitATE MK25 ABS control unit repair – professional repairs for brake problems, ABS failure or hydraulic faults by Revonik GmbH24-month warrantyDetails →Airbag control unitfrom €159Airbag control unitAirbag control unit repairs at Revonik GmbH24-month warrantyDetails →Engine control unitfrom €290EDC15C6 CDI2EDC15C6 CDI2 engine control unit repair for the Mercedes Sprinter and C-Class at Revonik GmbH – Professional repair to restore engine control and performance.24-month warrantyDetails →Engine control unitfrom €290EDC16C2 MercedesEDC16C2 CDI3 engine control unit repair for the Mercedes Vito W639, Viano W639, C-Class W203 and E-Class W211 at Revonik GmbH – professional repair to optimise engine control.24-month warrantyDetails →Engine control unitfrom €290EDC16CP31 MercedesRepair of the Mercedes engine control unit EDC16CP31 CDI4 for the E-Class W211, Sprinter 906, R-Class 251, Viano 639, Vito 639, M-Class 164, CLS-Class 219 and C-Class 203 at Revonik GmbH.24-month warrantyDetails →Engine control unitfrom €379ME9.7ME9.7 Engine Control Unit repair for Mercedes models such as the ML W164, CLS W219, E-Class W211 and C-Class W204 at Revonik GmbH – expert service to restore engine control.24-month warrantyDetails →Engine control unitfrom €379SIM4 LE/SE24-month warrantyDetails →Engine control unitfrom €379SIM4 LKE LSE24-month warrantyDetails →Instrument clusterfrom €159C-Class (W203) instrument clusterFaulty Mercedes instrument cluster for the C-Class W203 – repair service for instrument clusters with pixel faults and display failure24-month warrantyDetails →Otherfrom €229Mercedes ELV steering wheel lockMercedes ELV (Electronic Steering Wheel Lock) repair at Revonik GmbH – Professional repair to ensure full functionality and safety24-month warrantyDetails →Otherfrom €229Mercedes EZS electronic ignition lockElectronic ignition switch (EZS) Mercedes W204 with housing and connectors24-month warrantyDetails →Otherfrom €149Selector lever module W203/W209/W211/C219/R171Mercedes selector lever module, reconditioned for Revonik – W203, W209, W211, C219, R17124-month warrantyDetails →Transmission control unitfrom €279Transmission control unit 722.9Transmission control unit 722.9 – Repair for Revonik24-month warrantyDetails →

Common error codes

These error codes frequently occur in the control units of the C-Klasse-W203.

CodeDescriptionControl unit
240CThe selector lever position of the gear recognition module is not available on the CAN busSelector lever module W203/W209/W211/C219/R171
P0717The signal from component (sensor) Y3/8n1 is not availableTransmission control unit 722.9
P0718Component (sensor) Y3/8n1 is faultyTransmission control unit 722.9
P0720Malfunction of the output speed sensor circuitTransmission control unit 722.9
P1617EEPROM or faulty codingEDC16C2 Mercedes
P1856Selector lever position implausibleSelector lever module W203/W209/W211/C219/R171
P2123 P2124are stored under thermal influenceEDC16C2 Mercedes
P2200The signal from component (sensor) Y3/8n2 is not availableTransmission control unit 722.9
P2201Component (sensor) Y3/8n2 is faultyTransmission control unit 722.9
P2204The signal from sensor Y3/8n1 is not availableTransmission control unit 722.9
P2205Component Y3/8n1 is faultyTransmission control unit 722.9
P2300The control wire to the ignition coil for cylinder 1 is short-circuited to earthME9.7

Go to the complete error code database →

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