Symptom Chart

SYMPTOM	POSSIBLE CAUSES	ACTION
The electric park brake will not engage or release (with no electric park brake warning message)	Electric park brake left/right actuator incorrectly installed Rear left/right brake pads excessively worn Service brake incorrectly adjusted following brake pads change Rear left/right brake pad(s) seized (in caliper) Rear left/right brake caliper slide(s) seized Rear left/right brake caliper piston(s) seized Electric park brake system fault	Check the installation of the electric park brake actuators Check the rear brake pads for excessive wear Refer to the relevant service information and perform routine - Service Mode Deactivation Check the rear brake pads for seizure Check the rear brake caliper slides for seizure Check the rear brake caliper pistons for seizure Using the Jaguar Land Rover approved diagnostic equipment, check the ABS control module for related DTC s and refer to the relevant DTC index
The electric park brake will not engage or release (with electric park brake warning message)	Electric park brake left/right actuator incorrectly installed Rear left/right brake pads excessively worn Rear left/right brake pad(s) seized (in caliper) Rear left/right brake caliper slide(s) seized Rear left/right brake caliper piston(s) seized Parking brake system fault	Check the installation of the electric park brake actuators Check the rear brake pads for excessive wear Check the rear brake pads for seizure Check the rear brake caliper slides for seizure Check the rear brake caliper pistons for seizure Using the Jaguar Land Rover approved diagnostic equipment, check the ABS control module for related DTC s and refer to the relevant DTC index
No communication with the anti-lock brake system control module	Anti-lock brake system control module power or ground circuit open circuit, high resistance High speed Controller Area Network (CAN) bus (chassis) circuit short circuit to ground, short circuit to power, open circuit, high resistance High speed CAN bus (powertrain) circuit short circuit to ground, short circuit to power, open circuit, high resistance FlexRay bus circuit short circuit to ground, short circuit to power, open circuit, high resistance	Refer to the electrical circuit diagrams and check the ABS control module power and ground circuits for open circuit, high resistance. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, perform a CAN network integrity test. Refer to the electrical circuit diagrams and check the high speed CAN bus (chassis) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary Using the Jaguar Land Rover approved diagnostic equipment, perform a CAN network integrity test. Refer to the electrical circuit diagrams and check the high speed CAN bus (powertrain) circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary Refer to the electrical circuit diagrams and check the FlexRay bus circuit for short circuit to ground, short circuit to power, open circuit, high resistance. Repair the wiring harness as necessary
PARK BRAKE FAULT warning massage displayed in the message center	Wheel/tire size incorrect Electric park brake system fault	Check that the wheels and tires comply with the manufacturer's specification for the vehicle Using the Jaguar Land Rover approved diagnostic equipment, check the anti-lock brake system control module for related DTC s and refer to the relevant DTC index
Brakes drag	Electric park brake left/right actuator incorrectly installed Rear left/right brake pads excessively worn Rear left/right brake pad(s) seized (in caliper) Rear left/right brake caliper slide(s) seized Rear left/right brake caliper piston(s) seized Parking brake system fault	Check the installation of the electric park brake actuators Check the rear brake pads for excessive wear Check the rear brake pads for seizure Check the rear brake caliper slides for seizure Check the rear brake caliper pistons for seizure Using the Jaguar Land Rover approved diagnostic equipment, check the ABS control module for related DTC s and refer to the relevant DTC index
The electric park brake will not release on start up when the electric park brake switch is activated (with ABS , Dynamic Stability Control (DSC), Autonomous Emergency Braking (AEB) and Electric Park Brake (EPB) warning messages	Incorrect level of software installed in the ABS control module	Using the Jaguar Land Rover approved diagnostic equipment, re-configure the ABS control module with the latest level software