Mercedes-Benz AMG GLC63 2020–2021 — technical service bulletin
Bulletin LI20.10-P-072886 · NHTSA communication 10195221 · issued Apr 20, 2021
Technical service bulletin
communication type
Engine and Engine Cooling
component
2020–2021
model years
34
vehicle entries
Official summary
with engine M17x the ME Control Unit: "The Coolant Temperature is Below the Specified Temperature"
Vehicles covered
- 2020 Mercedes-Benz AMG GLC63
- 2020 Mercedes-Benz C 300
- 2021 Mercedes-Benz C 300
- 2020 Mercedes-Benz C 350
- 2020 Mercedes-Benz C 350 E
- 2020 Mercedes-Benz E 350
- 2021 Mercedes-Benz E 350
- 2021 Mercedes-Benz E 350 E
- 2020 Mercedes-Benz E 450
- 2021 Mercedes-Benz E 450
- 2020 Mercedes-Benz E63 AMG
- 2020 Mercedes-Benz GLA 250
- 2021 Mercedes-Benz GLA 250
- 2020 Mercedes-Benz GLB 200
- 2020 Mercedes-Benz GLB 250
- 2021 Mercedes-Benz GLB 250
- 2020 Mercedes-Benz GLC 300
- 2021 Mercedes-Benz GLC 300
- 2020 Mercedes-Benz GLC 350
- 2020 Mercedes-Benz GLC 350 E
- 2021 Mercedes-Benz GLC 350 E
- 2020 Mercedes-Benz GLE 350
- 2021 Mercedes-Benz GLE 350
- 2020 Mercedes-Benz GLE 350 E
- 2021 Mercedes-Benz GLE 350 E
- 2020 Mercedes-Benz GLE 450
- 2021 Mercedes-Benz GLE 450
- 2020 Mercedes-Benz GLE 580
- 2021 Mercedes-Benz GLE 580
- 2020 Mercedes-Benz GLS 450
- 2021 Mercedes-Benz GLS450
- 2021 Mercedes-Benz GLS580
- 2020 Mercedes-Benz GLS 580 4MATIC
- 2021 Mercedes-Maybach GLS 600
What a TSB means. Technical service bulletins are repair guidance manufacturers send to dealers — they are not recalls, and repairs are not automatically free (warranty extensions are an exception worth checking). The full document is available via NHTSA’s vehicle lookup.