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.
Automatic Belt Retractor (Locking Function), Checking
The automatic belt retractor has two locking functions.
- The first locking function is initiated by the belt being jerked out of the automatic belt retractor (belt extraction acceleration).
Test 1
-- Pull the seat belt webbing out of the automatic belt retractor quickly and firmly.
- No locking effect - replace the entire seat belt with seat belt latch.
- If there is difficulty extending or retracting the belt, first check if the position of the belt retractor has been changed.
- The second locking function is initiated by change in vehicle velocity (vehicle-dependent locking function).
Test 2
- For safety reasons, the road test should be carried out on roads without traffic so that other motorists/pedestrians, etc. are not endangered.
-- Fasten the seat belt.
-- Accelerate the vehicle to 20 km/h (12.4 mph) and then perform a hard braking maneuver using the foot brake.
- Replace the entire seat belt with the seat belt latch if the seat belt is not locked by locking mechanism during the braking procedure.
NO RELATED
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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.