Put the Electronic Parking Brake into Service Mode

Last updated: June 12, 2026

The Subaru XV / Crosstrek (Mk2/GT, 2017–2022) built on the Subaru Global Platform carries an electronic parking brake (EPB) on its EPB-equipped trims, with a ratcheting motor-driven actuator on each rear caliper. Because that actuator screws the piston outward, you cannot simply compress the rear pistons when changing pads — the spindle has to be wound fully back first. Here is the verified, model-specific way to do it on the second-generation XV.

What service mode does and why you need it

With the parking brake set, each rear caliper’s motor turns a spindle that pushes the piston out and ratchets it in place. Trying to force that piston straight back loads the gear train and strips the motor. Brake Maintenance Mode commands both actuators to retract the spindle and locks the EPB out so it cannot grab while the caliper is open. On the XV Mk2 the Subaru service manual specifies a bidirectional scan tool for this; a button-only owner sequence is not a documented method on this car, so plan for a tool or for removing the actuator motor.

Enter service mode (scan tool)

1. Chock the front wheels, switch the ignition ON with the engine OFF, and keep your foot off the brake.
2. Connect a Subaru-capable bidirectional scan tool (SSM or an aftermarket tool with Subaru EPB support) to the OBD-II port.
3. Open the parking-brake module, choose Brake Maintenance Mode and select Enter; the rear actuators whir as the spindles retract.

No-tool alternative

1. Remove the two cap screws securing each rear actuator motor and lift it off the caliper.
2. Turn the exposed splined shaft to wind the piston fully back, then refit the motor with a new O-ring.

Never force the pistons back by hand

Do not C-clamp the rear pistons in and never press the brake pedal with a caliper open. The XV rear piston only seats by unwinding the EPB spindle — electronically through a tool, or mechanically with the motor removed. Forcing it straight in destroys the actuator and is the most expensive mistake on this brake job.

Exit service mode and bed in

Install the new pads, slide the caliper home, and torque the guide bolts. Then reverse the process: with the tool, select Exit Maintenance Mode and let the actuators extend and self-test; if you removed the motors, refit them with fresh O-rings and cycle the EPB switch until it applies and releases cleanly. Pump the brake pedal until firm before moving the car. Bed the pads in with several moderate 30–40 mph stops, let everything cool, and check the EPB holds on an incline.

Frequently Asked Questions

Does my XV Mk2 even have an EPB? Check the centre console: a small switch marked “P” near the shifter means EPB. Some base Crosstrek trims kept a conventional lever — this guide is for the EPB cars only.

Can I skip the scan tool? Only by removing each rear actuator motor and winding the spindle by hand. There is no reliable button-only service mode on this generation.

Will pressing the EPB switch retract the pistons? No — the switch applies or releases the brake; it does not wind the spindle back for a pad change.

Why does the brake light stay on during the job? Service mode disables the EPB, so the warning light stays lit until you exit and re-initialise.

What if it won’t leave maintenance mode? Re-enter the tool menu and select Exit explicitly, confirm the actuator connectors are seated, then cycle the EPB to clear any stored code.

If a parking-brake or VDC light remains on after you finish, read the stored fault first at autodtcs.com to tell a re-init issue from a genuine actuator fault.