kenton59

Hey everyone, Just a heads-up for anyone planning to do a rear brake pad change on a Mark 4 Skoda Octavia (NX / 2020 onwards) using the ANCEL BD500 scanner. Despite ANCEL’s official marketing and compatibility charts claiming full "VAG group coverage" for Electronic Parking Brake (EPB) service mode, this tool does not work on the Mk4. ANCEL completely fails to mention in their product descriptions that the Mk4 Octavia uses the newer MQB Evo platform, which features SFD Protection (Vehicle Diagnostic Protection). Because the BD500 is a budget tool, it cannot unlock or bypass this security gateway. When you attempt to put the rear brakes into service mode, the tool simply fails or errors out because the car blocks the command. If you bought this tool specifically to do your rear brakes, you will either need to: Upgrade your tool: Use something like OBDeleven (with a Pro subscription for SFD unlock), VCDS, or ODIS. Do it mechanically: Remove the electronic parking brake motor from the back of the caliper (two T30 Torx screws) and manually wind the internal spindle back before compressing the piston. Don't find out the hard way when your car is already up on axle stands with the wheels off!