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

Bulletin LI91.30-P-079285 · NHTSA communication 11030297 · issued Mar 26, 2026

Technical service bulletin

communication type

Structure

component

2020–2026

model years

vehicle entries

Official summary

Complaint In vehicles without codes REAR SEAT ENTERTAINMENT (854/447/864) and 903 REAR COMFORT SEAT HEATING (903) or REAR COMFORT PACKAGE (P08), the rear seat heating cannot be activated via voice control. However, the voice control erroneously provides feedback that the seat heating has been activated. Cause A26/17 - MBUX multimedia system (Head unit) software Remedy Software E604 (FUP6) corrects the erroneous feedback from the head unit regarding the activation of the seat heating. Important note: The feature "Activation of seat heating via voice control" is only available in vehicles with c

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.