⚙️ Mercedes A-Class Transmission Control Module (TCM) Repair – P/N: A 168 540 00 44

Login to view price

Price Exclusive of GST

Our minimum assessment fee is $150 + GST (Excluding Headlights). This just covers the time to check the unit over. If you proceed with the repair, we’ll apply this to the total cost. Our full terms of trade can be found here. Has repair work been attempted by your customer? Link here !

Heavy Diesel or Industrial Repair you need? Link here for a solution!

International Customers:
When sending a unit from overseas, please declare it as “Repair and Return” with a low customs value (around $100 USD) to avoid unnecessary import fees. - All Repair Prices are quoted in NZD

⚙️ Mercedes A-Class Transmission Control Module (TCM) Repair – P/N: A 168 540 00 44

Selector Fault | Internal TCU Error Code 200A

This is a repair service for the transmission control unit (TCU) / gear selector module found in the Mercedes-Benz A-Class, part number A 168 540 00 44 / 7 D 88. These units often fail due to internal electronic faults, commonly showing fault code 200A – “Internal fault in control unit.”

Common Symptoms Repaired:

  • Gear selector not responding

  • Transmission stuck in park or limp mode

  • Fault code 200A: Internal fault in control unit

  • Dash warnings for transmission or gear selection

  • No communication with TCU via diagnostics

What We Do:

  • Disassemble and inspect the internal control circuitry

  • Repair or replace faulty components causing the internal error

  • Reflow or rebuild key communication and power tracks

  • Bench test the selector function and CAN communication

Applies To:

  • Mercedes A-Class (W168 and similar platforms using P/N A 168 540 00 44)

  • TCU with markings 7 D 88, selector-type mounted

Turnaround Time: 2–4 business days
Warranty: 12 months on repaired components

💡 Save time and cost by repairing your original selector module — no need for reprogramming or key matching.