• Mercedes-Benz SL320 (1996–1999 R129) Transmission Control Module (TCM) Repair Service #mercedesbenz #sl320 #r129 #tcmrepair #transmissioncontrolmodule #ecumaverick #mercedesrepair #mercedesparts #sl320r129 #transmissionissue U0101 - Lost Communication With TCM P0700 - Faulty Transmission Computer Module P0613 - Internal TCM Problem P0604 - Internal TCM P0605 - Internal TCM P0614 - ECM/TCM Incompatible P1698 - No CCD/J1850 Message From TCM P0748 - Pressure Control Solenoid A Electrical
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Mercedes-Benz SL320 (1996–1999 R129) Transmission Control Module (TCM) Repair Service

Mercedes-Benz SL320 (1996–1999 R129) Transmission Control Module (TCM) Repair Service

$299.00 USD
$299.00 USD
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Mercedes-Benz SL320 (1996–1999 R129) Transmission Control Module (TCM) Repair Service

Restore proper shifting performance in your Mercedes-Benz SL320 (1996–1999 R129) with our expert Transmission Control Module (TCM) Repair Service. If you're experiencing harsh shifting, limp mode, or communication errors with the transmission system, a faulty TCM could be the cause.

We specialize in repairing and restoring original transmission modules to factory functionality using premium components and advanced diagnostics—preserving your original programming whenever possible.

Common Symptoms of a Faulty TCM:

  • U0101 - Lost Communication With TCM
  • P0700 - Faulty Transmission Computer Module
  • P0613 - Internal TCM Problem
  • P0604 - Internal TCM
  • P0605 - Internal TCM
  • P0614 - ECM/TCM Incompatible
  • P1698 - No CCD/J1850 Message From TCM
  • P0748 - Pressure Control Solenoid A Electrical

Vehicle Compatibility:

  • Mercedes-Benz SL320 (R129 chassis)
  • Model Years: 1996, 1997, 1998, 1999

Important Notes:

  • This service is for the repair of your original TCM. It is not an exchange or new unit.
  • Severe water damage or tampering may render the unit unrepairable (you'll be contacted if that's the case). *If your module has water damage or does not communicate, a bench testing fee will apply.
  • Original coding is retained unless otherwise specified or requested.

 

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Getting Started

Submit Your Work Order

Fill out our simple work order form to get your unique work order number. We'll email you shipping instructions immediately. Ship your module to us using any carrier (USPS, FedEx, UPS). Include your work order number with your shipment.

What's Covered

Thorough Bench Testing

Every module is tested before and after repair to ensure full functionality. If your unit tests fine, shows no issues, or is deemed non-repairable, a bench fee applies. We'll contact you before charging anything beyond the base service fee.

What to Expect

Turnaround & Warranty

✓ Turnaround: 2-3 business days (complex jobs may take longer)

✓ Warranty: 6 months on repairs we perform

✓ Programming: Not required—plug and drive

About ECU Maverick — Expert ECU Repair & Programming Services

ECU Maverick specializes in component-level ECU repair and programming for European, domestic, and specialty vehicles. Based in Fort Myers, Florida, we serve independent repair shops, dealerships, and vehicle owners nationwide.

Where most shops rely on reprogram-and-replace methods, we take a different approach. Our technicians diagnose and repair individual circuits at the board level, restoring modules that others write off as failures. This expertise comes from years of reverse engineering and bench testing across thousands of control units.

Vehicles We Service

We specialize in European automotive electronics, including BMW, Mercedes-Benz, Audi, Porsche, Land Rover, Bentley, Ferrari, Lamborghini, Maserati, and Aston Martin ECU repair. We also service domestic vehicles, heavy equipment control modules, and marine electronics systems.

Why Shops and Owners Choose Us

Fast Turnaround — Most ECU repairs ship within 2–3 business days. Same-day rush service available.

Plug-and-Play Ready — Every module leaves fully programmed and coded to your vehicle. No dealer visit required.

Direct Communication — Text or call us and speak with a real technician. No ticket queues, no waiting.

6-Month Unlimited Mileage Warranty — Drive with confidence. Our warranty covers you regardless of how many miles you put on.

Our Commitment

We exist to keep your vehicle out of the dealership and back on the road—with reliable repairs, transparent pricing, and expert support from start to finish. Every job receives the same attention we'd give our own vehicle.