Tesla Model 3 2018 — technical service bulletin
Bulletin SB-19-40-001 · NHTSA communication 10153432 · issued Jan 23, 2019
Technical service bulletin
communication type
Engine and Engine Cooling
component
2018
model years
1
vehicle entries
Official summary
On certain Model 3 vehicles, coolant might leak from the rear drive unit inverter 55 degree fluid coupling. This could result in a low coolant alert in the vehicle.
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.