Mercedes-Benz Sprinter 1500 2020 — technical service bulletin
Bulletin LI28.19-N-071366 · NHTSA communication 10177562 · issued Jun 22, 2020
Technical service bulletin
communication type
Power Train
component
2020
model years
4
vehicle entries
Official summary
At times, all-wheel drive and/or gear reduction cannot be switched on or off. Engagement is sporadic or erroneous. Unfavorable position of transfer case absolute sensor (turning angle sensor) (B57). Update software of transfer case control unit (N45).
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.