Mercedes-Benz GLS 450 2020 — technical service bulletin
Bulletin NCU-2020050010 · NHTSA communication 10176668 · issued May 22, 2020
Technical service bulletin
communication type
Electrical System
component
2020
model years
1
vehicle entries
Official summary
The software in the NTG5 control unit may not correspond with our internal specifications in the vehicles of the above-mentioned model series transferred to you. For this reason, the possibility exists that the automatic car wash mode may be activated after ignition ON/OFF.
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.