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

X253 / OM654 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / MRG1

Mercedes GLC OBD Unlock Patch

ECU access only. Performance tuning is sold separately.

Model years2019-2026
ECU identifiersOM654 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / MRG1
PlatformX253
ServiceRequest OBD unlock patch

Mercedes GLC OBD unlock patches

2026 Mercedes GLC X253 ECU OBD Unlock Patch

OM654 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / MRG1 / X253 · AutoTuner Bench Patch

$200 View unlock service

2025 Mercedes GLC X253 ECU OBD Unlock Patch

OM654 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / MRG1 / X253 · AutoTuner Bench Patch

$200 View unlock service

2024 Mercedes GLC X253 ECU OBD Unlock Patch

OM654 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / MRG1 / X253 · AutoTuner Bench Patch

$200 View unlock service

2023 Mercedes GLC X253 ECU OBD Unlock Patch

OM654 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / MRG1 / X253 · AutoTuner Bench Patch

$200 View unlock service

2022 Mercedes GLC X253 ECU OBD Unlock Patch

OM654 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / MRG1 / X253 · AutoTuner Bench Patch

$200 View unlock service

2021 Mercedes GLC X253 ECU OBD Unlock Patch

OM654 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / MRG1 / X253 · AutoTuner Bench Patch

$200 View unlock service

2020 Mercedes GLC X253 ECU OBD Unlock Patch

OM654 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / MRG1 / X253 · AutoTuner Bench Patch

$200 View unlock service

2019 Mercedes GLC X253 ECU OBD Unlock Patch

OM654 / MRD1 / MRD1.40 / MRD1.41 / MRD1.42 / MRD1.48 / MRD1.76 / MRD1.77 / MRD1.81 / MRG1 / X253 · AutoTuner Bench Patch

$200 View unlock service