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.
Work sequence
- Connect Scan Tool V.A.G 1551/1552 β Scan Tool V.A.G 1551 , connectingΒ .
- Start engine and let idle.
- Press - 0Β - and - 1Β - buttons to select address word 01: " Engine electronics".
- Press β button.
Indicated on display:
| Rapid data transfer HELP Select function XX |
- Press buttons - 0Β - and - 8Β - for "Read measured value block" and confirm with - QΒ - button.
Indicated on display:
| Read measured value block HELP Input display group number XXX |
- Press buttons - 0Β - , - 0Β - and - 6Β - for "Display group number -6-" and confirm with - QΒ - button.
- Observe display in display field 4.
| Read measured value block 6 -> 0 km/h 0 0 0 000000 0 |
Specification: 0
If 255 is displayed in display field 4: β Electrical Wiring Diagrams, Troubleshooting and Component Locations
| Read measured value block 6 -> 0 km/h 0 0 0 000000 255 |
Vehicles with automatic transmission only:
Test drive and exceed a speed of 30 km/h (approx. 19 mph) once. Then switch off engine and leave selector lever in position 2, 3 or D.
Observe safety procedures during test drive β Safety precautionsΒ .
- Set parking brake.
- On vehicles with an automatic transmission CCS switch will not be supplied with voltage until vehicle speed exceeds 30 km/h (20 mp/h) and the selector lever is in position 2, 3 or D. Once the switch has been supplied with voltage it will also remain live at idle provided a forward gear is selected.
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- β’ You smell fuel, burning insulation, or see smoke.
- β’ Brakes feel soft, pull hard to one side, or make grinding noises.
- β’ The engine overheats, stalls repeatedly, or misfires under load.
- β’ You are missing required tools, torque specs, or safe lifting equipment.
- β’ You are not confident in the next step or safety outcome.