Mercedes-Benz AMG GLE53 2020–2026 — technical service bulletin

Bulletin LI83.30-P-077763 · NHTSA communication 11027783 · issued Jan 21, 2026

Technical service bulletin

communication type

Visibility/wiper

component

2020–2026

model years

vehicle entries

Official summary

Complaint Customer concern of Air Conditioning not cooling. *NOTE - Use of tracer DYE for leak checks is not approved. Only approved leak check procedures as per WIS are approved. Cause Possible refrigerant leak. Remedy Perform the following measures : *Important* - Photo documentation requirement is no longer in effect as of 10/1/2025. Remedy 1: Replace Evaporator (Only applies to vehicles produced PRIOR to April 15, 2022 and has NOT had the evaporator replaced previously) 1. Ensure that the rest of the AC system has been thoroughly checked for leaks with forming gas as per WIS before condemn

Vehicles covered

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.