Ho avuto il tuo stesso problema quando montai il cruise control sulla mia precedente golf e non appena accesi il motore si accesero diverse spie sul cruscotto (ABS, ESP, servosterzo, ecc...). Alcune si spensero dopo pochi chilometri ma quella dello sterzo rimase accesa e la diagnosi mi restituiva "00778 Steering Angle Sensor (G85)". Feci diversi tentativi poi seguendo questa guida ho risolto il problema:
Adaptation Basic Setting Sensor for Steering Angle (G85) Prerequisites:
Start the vehicle.
Turn the steering wheel one turn to the right and one turn to the left.
Drive in a short distance straight line on a level surface at a speed not higher than 20 km/h.
If the steering wheel is straight during the test drive then stop the vehicle with the wheels pointed straight.
Ensure that the steering wheel is not moved again.
Keep the engine running and do not switch off the ignition.
System voltage at least 12.0 V.
[select] [03 - Brake Electronics] [Measuring Blocks - 08]
Group 004 [Go!]
Check field 1, the value has to be between -1.5 and +1.5 °. [Done, Go Back] [Coding-II - 11] OR (if Coding-II is not available) [security Access - 16]
Enter 40168, to enable the basic setting. [Do it!] [basic Settings - 04]
Group 060 [Go!]
After a successful basic setting, field 2 should say "OK". [Done, Go Back] [Close Controller, Go Back - 06]
Prova e fammi sapere !
Più di questo non so come aiutarti
Ciao