Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Electromechanical Parking Brake, Checking
"Test mode", activating:
Conditions
- No error with influence on the roller test stand function present (for example speed sensor error).
- The seat belt is buckled.
- Rear axle in the one-axle roller test stand
- No selector lever position selected
- Ignition is switched on (minimum 3 seconds)
- The front wheels must be stationary (minimum 3 seconds).
- The rear wheel must rotate for at least 3 seconds non-stop between 2 km/h and 9 km/h (1.2 mph and 5.6 mph)
"Test mode" is indicated when the yellow Electric Parking/Hand Brake Malfunction Indicator Lamp -K214- is displayed.
The electromechanical parking brake does not close completely the first time the "Test mode" button is pressed.
Pressing the Electromechanical Parking Brake Button -E538- two times in a row gradually increases the tension force.
- First operation: move both sides of the parking brake to the contact point
- Second operation: both sides of the parking brake are fully actuated
End the "Test mode" :
As soon as the condition for "Test mode" is no longer fulfilled, "Test mode" is immediately left, for example:
Conditions
- Front wheels: speed greater than 0 km/h (0 mph)
- Rear wheels: speed less than 2 km/h (1.2 mph) or greater than 9 km/h (5.6 mph)
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Affiliate disclosure: We may earn a commission at no extra cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.