Jeep Grand Cherokee 2021 — technical service bulletin
Bulletin 08-127-21 · NHTSA communication 10218550 · issued Aug 4, 2021
Technical service bulletin
communication type
Exterior Lighting
component
2021
model years
1
vehicle entries
Official summary
Flash: Smart Lighting Module Left (SLML) and Smart Lighting Module Right (SLMR) Updates This bulletin involves reprogramming the SLML and SLMR with the latest available software. Customers may experience a Malfunction Indicator Lamp (MIL) illumination. Upon further investigation the technician may find that one or more of the following Diagnostic Trouble Codes (DTCs) have been set: B2834-00 - Right Headlamp Assembly Performance. B2835-00 - Left Headlamp Assembly Performance. Customers may experience one or more of the following:?Service Headlamp? message appears in the information cluster. Hea
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.