BMW 320d, 320i, 330i, 420i, 430i, 520d, 520i, 530i, 620d, 630i, X3, X4 & Z4 (2016–2020)
What the hazard is
A vehicle fire could increase the risk of injury or death to vehicle occupants, other road users, bystanders and/or damage to property.
What to do
Owners of affected vehicles will be contacted by BMW requesting that they schedule an appointment immediately with their preferred authorised BMW dealer to replace the starter motor, free of charge.
Defect
Due to a manufacturing defect, inadequate sealing of the starter motor may allow moisture to enter into the unit. If this occurs, corrosion may result in the engine not starting. In rare cases, it could also cause a short circuit leading to overheating of the starter motor and in the worst case, to a vehicle fire while parked or driving.