CEDAR PERFORMANCE · DALLAS
Mercedes CLS C257 ECU unlock
Get your ECU ready for tuning.
Choose a time, enter your vehicle and pay $200. No account needed.
Not sure your controller is supported? Email Cedar before paying.
$200Unlock serviceTuning sold separately
Allow 60 minutesDallas appointment or ECU mail-inAutoTuner Bench Patch
Controller compatibility
| Application | Controller | Type | Supplier-listed dates |
|---|---|---|---|
| 53 AMG (3.0T) | MG1CP002 | Engine ECU | From Jan 2018 |
| 450 AMG (3.0T) MHEV | MG1CP002 | Engine ECU | From Jan 2018 |
| 450 AMG (3.0T) | MG1CP002 | Engine ECU | From Jan 2018 |
| 300d (2.0) | MD1CP001 | Engine ECU | From Jan 2018 |
| 350d (2.9) | MD1CP001 | Engine ECU | From Jan 2018 |
| 400d (2.9) | MD1CP001 | Engine ECU | From Jan 2018 |
Source: AutoTuner, checked Sep 8, 2026. Confirm your controller and software with Cedar; year alone does not establish compatibility.
Cancellation or unsuccessful unlock: $185 refund, $15 cancellation fee.
Bringing your vehicle? Book online. Already removed your ECU? Call before your visit. Arrange ECU mail-in by phone before removing or shipping it. (972) 821-7664