Brake System: Visual Inspection Of Brake Pads And Brake Discs For Wear

WARNING: This page is about a different car, the 2020 Porsche Cayenne and 2019 Porsche Cayenne. However, it is still accessible from the selected car via links, so may be relevant.

WARNING: Risk of accidents if brake pads and brake discs are not replaced in time.

Risk of injury and material damage due to impaired braking effect.
1. → The brake pads must be replaced when the brake pad warning indicator lights up, but no later than when there is a residual pad thickness of 2 mm.
2. → Brake discs must be replaced on reaching the wear limits.

Information

If brake pad wear is indicated by the warning light, the warning contact (sender including line and plug connection) must also be replaced.
Replacing the warning contact can be avoided by replacing the brake pads no later than when the pad thickness is approx. 2.5 mm.
Warning contacts must be replaced if the core of the wire is worn. Worn insulation is not important.
However, if only the plastic part of the warning contact is worn, there is no need to replace it.

Visually inspect the brake pads for wear.
1. 1.1 For grey cast-iron brake discs:
  > 463602 CHECKING FRONT BRAKE PADS
  
  > 463802 CHECKING REAR BRAKE PADS
2. 1.2 For PCCB brake discs:
> 463402 CHECKING FRONT PCCB BRAKE PADS

> 463502 CHECKING REAR PCCB BRAKE PADS
Carry out visual inspection of the brake discs for wear.
1. 2.1 For grey cast-iron brake discs
  > 465002 CHECKING FRONT BRAKE DISCS (GREY CAST-IRON)
  
  > 465302 CHECKING REAR BRAKE DISCS (GREY CAST-IRON)
2. 2.2 For PCCB brake discs:
> 465102 CHECKING FRONT PCCB BRAKE DISCS

> 465402 CHECKING REAR PCCB BRAKE DISCS