Brake Noise (Groaning/Creaking)
Information
The noise complaint must be documented as follows.
Recreate the driving situation in which the noise occurs and repeat this several times if possible. Choose the quietest area possible to do this.
- At speeds < 10 km/h (6 mph) - Record the noise from outside and capture the brake that is causing the noise in the picture
- At speeds > 10 km/h (6 mph) - Record the noise from inside and capture the speedometer in the picture
File name of the video: Quality line ID_Vehicle_Noise_DDMMYYYY
e.g.: 2200123456_911 Carrera_Groaning_26082020
Work Procedure:
Information
A groaning noise or creaking usually occurs when the brakes are cold. Squealing can occur in all driving situations.
First classify the noise using the sound file. You will find this under "4636 - Sound file for TI (122/20)" in the information medium TI - Technical Information, Main group 4 - Chassis.
If the noise cannot be classified as groaning or creaking, continue with > Warm brakes .
| Groaning | Creaking |
|---|---|
| Create vehicle analysis log (VAL), reproduce the noise and record it on video. | Create vehicle analysis log (VAL), reproduce the noise and record it on video. |
| Can the groaning noise be confirmed and is this the noise the customer complained about? | Can the creaking noise be confirmed and is this the noise the customer complained about? |
| Yes | No | Yes | No |
|---|---|---|---|
| See section "Procedure with confirmed noise". | Continue as required for the detected noise, using the sound file to classify it. See 3D Information. |
See section "Procedure with confirmed noise". | Continue as required for the detected noise, using the sound file to classify it. See 3D Information. |
Procedure with confirmed noise
- Make meaningful documentation of the noise with sound and video material in PQIS.
- Check whether a suitable TI/SY is available for the reported noise in PCSS and work through it.
- If no remedial action is available and there is no technical defect in the brake system, explain the technical situation to customers with the help of the Driver's Manual of the vehicle (section: Brakes - Footbrake - Brake pads and brake discs).
- If necessary, contact Technical Support in order to agree on how to proceed.
3D Information:
For better classification of the noises, use the sound file/video under the following link.