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1.The ABS control brake pressure with the help of the ECU’s. Therefore, although the phenomena described in the following table may occur, they should not be regarded as faults because they are generated in a normal operation of ABS system.
Symptom
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Explanation of symptom
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- When the HBB operates, the operating noise is generated from the motor. (Squeak noise)
- Noise is generated from the brake pedal together with the vibration. (Gride noise)
- When ABS operates, the system repeats the activation and deactivation. At this time, the noise is generated from the chassis components. (Clonk: Suspension, Squeaky: Tyres)
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These noises are generated when the system and brake pedal operate normally, and they do not indicate any sign of malfunction.
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- When the brake pedal is lightly depressed in a low-speed driving, shock may occur.
- When the engine is started, light noise such as "clicking" sound may be generated from the engine room.
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This is not a fault because of system operation check (starting-of check at the speed of 2 - 3 km/h or over).
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2.For road surfaces such as snow-covered roads and gravel roads, the braking distance for vehicles with ABS can sometimes be longer than that for other vehicles. Accordingly, advise the customer to drive safely on such roads by lowering the vehicle speed and not being too overconfident.
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3.Diagnosis detection condition can vary depending on the diagnosis code. Make sure that checking requirements listed in the "Comment" are satisfied when checking the trouble symptom again.
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