Due to the inappropriate installation of the switch sleeve in the brake assisting mechanism (*) in
the brake booster, the switch sleeve with a crack may have been installed. As a result, the tip of the
switch sleeve would break and the brake pedal would not return resulting in the vehicle to be unable
to restart.
(*) Brake assisting mechanism: the mechanism to strengthen the brake force by increasing the oil
pressure upon acknowledgement of urgency depending on the pedaling speed and force of the brake
pedal.