ABS system self-check
Subaru Tribeca / Subaru Tribeca 2006-2025 Owners Manual / Starting and operating / ABS (Anti-lock Brake System) / ABS system self-check
You may feel a slight shock in the brake pedal and hear the operating sound of ABS from the engine compartment just after the vehicle is started. This is caused by an automatic functional test of the ABS system being carried out and does not indicate any abnormal condition.