Mercedes-Benz Sprinter 1500 2020–2021 — technical service bulletin
Bulletin LI14.40-N-072089 · NHTSA communication 10186131 · issued Dec 3, 2020
Technical service bulletin
communication type
Electrical System
component
2020–2021
model years
8
vehicle entries
Official summary
Indicator lamp illuminates in instrument cluster, fault present for AdBlue
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.