Put the Electronic Parking Brake into Service Mode

Last updated: June 11, 2026

The Subaru Levorg (VM/VN, 2014–Present) sport tourer uses an electronic parking brake (EPB) with a motor-driven actuator on each rear caliper, shared with its Outback and Legacy cousins. The actuator screws the piston outward for parking, which is exactly why you cannot just compress the rear pistons during a pad change — the spindle must be wound fully back first. This guide gives the verified, generation-aware method for the Levorg.

What service mode does and why you need it

When the EPB is applied, each rear motor turns a spindle that pushes the piston out and ratchets it in place. Force that piston straight in and you load the thread and gear train, stripping the motor. Brake Maintenance Mode commands both actuators to retract the spindle and disables the EPB so it cannot grab while the caliper is open. On the first-generation Levorg (VM) the Subaru manual lists the scan-tool function and permits mechanical windback; on the newer VN Levorg the factory leans on the scan tool as the method, so check which you have.

Enter service mode (scan tool)

1. Chock the front wheels, ignition ON, engine OFF, 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, select Brake Maintenance Mode, choose Enter, and let the rear spindles whir back.

No-scanner alternative (earlier VM Levorg)

1. Windback tool: unbolt the caliper, fit a right-hand windback tool, and turn clockwise on both sides until the piston seats.
2. Or remove the actuator motor’s two cap screws, turn the splined shaft clockwise to the hard stop, and refit 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 Levorg rear piston only seats by turning (clockwise) or by electronic retraction. Forcing it straight in destroys the EPB actuator. Open the brake-fluid reservoir cap before seating the pistons so displaced fluid can rise without trapping pressure.

Exit service mode and bed in

Fit the new pads, torque the slider bolts, and reverse your chosen method: with the tool select Exit Maintenance Mode and let it self-test; if you wound back manually, refit any removed motor with a fresh O-ring, start the car, and pump the pedal firm. Apply and release the EPB twice to re-tension against the new pads. Bed in with several moderate 30–40 mph stops, let the brakes cool, and confirm the EPB holds on an incline.

Frequently Asked Questions

Is the windback route safe on a Levorg? On the earlier VM Levorg the factory manual recognises windback and motor removal. On the latest VN, treat the scan tool as the primary method and use windback only if you are confident.

Which direction does the windback tool turn? Clockwise on both rear calipers, using a right-hand-thread tool.

Will the EPB switch put it in service mode? No — the switch applies or releases the brake; it does not wind the spindle back for a pad change.

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

Do I replace anything when removing the motor? Yes — a new actuator O-ring every time the motor comes off keeps water out.

If a VDC or parking-brake warning lingers after the job, read the stored code first at autodtcs.com to tell a simple re-init apart from a real actuator fault.