How does the parking brake work on an EPB?
If the EPB is applied while the vehicle is in motion, a chime will sound, and the DIC message RELEASE PARKING BRAKE will be displayed. The vehicle will decelerate as long as the switch is held in the up position. Releasing the switch during the deceleration will release the parking brake.
When do you release the electric parking brake?
The EPB is released when the Electric Parking Brake Light is off. If the Service Electric Parking Brake Light is on, the EPB has detected a system problem, and is operating with reduced functionality. To release the EPB when this light is on, push down on the P switch and hold it in the down position.
Is the EPB system in service or maintenance mode?
Vehicles equipped with EPB may experience unexpected parking brake application, which could result in personal injury and system damage. The EPB system must be in service or maintenance mode prior to servicing or removing rear brake components.
How do you turn off the EPB light on a Lexus?
Lexus has a similar manual release procedure available for their cable puller design, but again after the service work has been performed, a scan tool that will communicate bidirectional with the EPB module is going to be needed to finish the repair, and turn off the EPB light.
Why is my EPB not working on my car?
In most cases of EPB failure, the root cause is a faulty rear caliper motor (actuator). The typical set up is a bolt on actuator for each of the rear brake calipers, although some calipers integrate the motors and some systems use just one actuator.
If the EPB is applied while the vehicle is in motion, a chime will sound, and the DIC message RELEASE PARKING BRAKE will be displayed. The vehicle will decelerate as long as the switch is held in the up position. Releasing the switch during the deceleration will release the parking brake.
How do you stop an electric parking brake?
1. Place the ignition switch to the ON position (engine off). 2. Depress and hold the accelerator pedal to the floor while holding the EPB switch in the release position. Continue to hold the accelerator pedal and EPB switch. 3.
What makes a single actuator EPB not release?
The single actuator type EPB is a little different in that a single actuator pulls two cables attached to rear caliper parking brake levers. The effect is the same, the rear caliper pistons and pads are held against the rotors. As you know, by far the most common EPB faults are failed rear actuators.