Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Test sequence
- Determine type of brake caliper installed on front axle of vehicle.
The illustration shows the brake type FN3 made by Teves/Ate (recognized by: clip on brake pad carrier).
The illustration shows the brake type HP2 made by Lucas (recognized by: double-piston brake caliper).
- Connect VAS5051 tester or VAG1551 scan tool and select the address word 03 "Brake Electronics". See VAG1551 SCAN TOOL (ST), CONNECTING AND ENTERING ADDRESS WORD .
Indicated on display
- Press buttons -1- and -1- to select "Login Procedure" function 11.
Indicated on display
- Press the -Q- button to confirm input.
Indicated on display
- Enter code according to the following table and press -Q- button to confirm input.LOGIN CODE - BOSCH 5.3 WITH ESP
Type of brake caliper on front axle Login code FN3 Teves/Ate 05397 HP2 double-piston brake caliper 05497
Indicated on display
- Press -0- and -7- buttons to select "Code Control Module" function 07 and press -Q- button to confirm input.
Indicated on display
- Confirm input using the -Q- button.
Indicated on display
- Enter code according to the following table and press -Q- button to confirm input.CONTROL MODULE CODE - BOSCH 5.3 WITH ESP
Type of brake caliper on front axle Coding FN3 Teves/Ate 08297 HP-2 double-piston or Brembo caliper 08397
VAG1551 scan tool display indicates control module coding, for example: 4D0 907 379 D ABS/EPS front.
- Press --> button.
Indicated on display
- Press -0- and -4- buttons to select "Basic Setting" function 04 and press -Q- button to confirm, to start zeroing procedure for steering angle sensor -G85-, display group 001, see BASIC SETTING (SCAN TOOL FUNCTION 04) .
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.