Checking Thickness Of Rear Brake Pads

→ Only use the type -specific brake pads listed in the Porsche Parts Catalogue.

→ Replace the brake pads when the brake pad wear indicator light comes on, but no later than when there is a residual pad thickness of 2 mm on each axle.

→ Replace the brake discs on each axle as soon as the brake pad wear limit is reached.

Information 

• If brake pad wear is indicated by the warning light, the warning contact (sender including wire 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 2.5 mm -arrows-. 
  Fig 1: Checking Brake Pads Thickness

  Courtesy of PORSCHE CARS NORTH AMERICA, INC.
• Warning contacts must be replaced if the core of the wire is worn. 
• However, if only the plastic part of the warning contact is worn, there is no need to replace it. 

1. Checking brake pads for wear during intermediate maintenance: 

   Visually inspect the brake pads for wear. There is no need to remove the wheels unless the brake fluid needs to be changed at the same time. 

   A mirror can be used as an aid -arrow-  . Without an aid, the inner brake pad is not or is only partly visible (on the rear axle with the wheel fitted).

   Fig 2: Checking Rear Brake Pads Using Mirror

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

• Checking brake pads for wear during routine maintenance: 

  Check the brake pads for wear with the wheels removed.

  Preliminary work: Remove wheels. → 440519 REMOVING AND INSTALLING WHEEL .