Cedar PerformanceECU / DME tuning
Photographed Cedar Performance workstation with the bench-patch tool used for OBD unlock service

C257 / MRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81

Mercedes CLS OBD Unlock Patch

Mercedes CLS OBD Unlock Patch service using AutoTuner Bench Patch compatibility, listed by model year, controller coverage, and request intake at Cedar.

View 9 OBD unlock patchesBrowse Mercedes
Model years2018-2026
ECU identifiersMRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81
PlatformC257
ServiceRequest OBD unlock patch

OBD unlock catalog

Mercedes CLS OBD unlock patches

Open the exact vehicle page to review controller coverage and request the unlock service.

2026 Mercedes CLS C257 ECU OBD Unlock Patch

MRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / C257 · AutoTuner Bench Patch

$200 View unlock service

2025 Mercedes CLS C257 ECU OBD Unlock Patch

MRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / C257 · AutoTuner Bench Patch

$200 View unlock service

2024 Mercedes CLS C257 ECU OBD Unlock Patch

MRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / C257 · AutoTuner Bench Patch

$200 View unlock service

2023 Mercedes CLS C257 ECU OBD Unlock Patch

MRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / C257 · AutoTuner Bench Patch

$200 View unlock service

2022 Mercedes CLS C257 ECU OBD Unlock Patch

MRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / C257 · AutoTuner Bench Patch

$200 View unlock service

2021 Mercedes CLS C257 ECU OBD Unlock Patch

MRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / C257 · AutoTuner Bench Patch

$200 View unlock service

2020 Mercedes CLS C257 ECU OBD Unlock Patch

MRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / C257 · AutoTuner Bench Patch

$200 View unlock service

2019 Mercedes CLS C257 ECU OBD Unlock Patch

MRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / C257 · AutoTuner Bench Patch

$200 View unlock service

2018 Mercedes CLS C257 ECU OBD Unlock Patch

MRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / C257 · AutoTuner Bench Patch

$200 View unlock service

ECU access coverage

Mercedes CLS OBD unlock details

Service methodAutoTuner Bench Patch

9 vehicle listings across 2018-2026.

Controller coverageMRG1 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81

Controller compatibility is confirmed from the actual ECU before service.

Request intakeECU confirmed first

This service is the OBD unlock patch only; any tune is selected separately.

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