Ford Transit 2020 — technical service bulletin
Bulletin 20B35 · NHTSA communication 10181987 · issued Oct 9, 2020
Technical service bulletin
communication type
Engine
component
2020
model years
1
vehicle entries
Official summary
Some of the affected all-wheel driver (AWD) vehicles were assembled with mismatched front to rear final drive gear ratios. AWD vehicles with mismatched gear ratios may exhibit front end shudder upon acceleration and/or the Traction Control System (TCS) may activate. If the TCS activates, an icon on the cluster advising the driver that the TCS is active may illuminate, leading to engine torque reduction to slow the vehicle. The transfer case clutch will continue to wear until AWD function becomes unavailable. Some of the affected rear wheel drive (RWD) vehicles were assembled with incorrect rea
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.