BMW X4 Pistons in rear brake calipers may not be coated to specifications Recall
Recall affects BMW X4
Reason for recall: The fault affects the brake system in particular the brake calipers on the rear axle. Because of a faulty coating hydrogen gas (approximately 10 ml) could be created in the coating of the piston of the brake caliper. This will be completely outgassed during the first 2 months after the production process causing longer brake pedal travel. Under certain circumstances the relevant brake pressure cannot be build up in the rear brake circuit. As a result the brake force of the system may be reduced by up to 30%. The driver may feel a soft brake pedal and a reduction of the brake performance. In certain cases the rear brake circuit could fail leading to increased risk of an accident.
When was it announced?
Aug 10, 2018
What action are BMW taking?
On the affected vehicles the brake system will be bled.
Does this affect your X4?
This issue affects X3 X4, this particular recall is for the X4.