ACC in guard sistem je ena enota pod oznako J428.
Glede tvojega primera, bo potrebno iti skozi celoten postopek in sicer najprej kar je skozi MMI 3G/2G v vozilu (nic narobe, ce je v opisu sasija A5 B8):
http://s208276702.websitehome.co.uk/onb ... m00304.htm predvsem pozor tudi na pravilno vklopljen ESC ter hitrost visja od 30km/h. V skrajnem primeru je mozen tudi SW (update).
V primeru, da se tu izkaze, da je vse ok, bo potrebno priklopiti na VCDS za pregled napak, ki bi skozi tole shemo oznak/modulov spodaj lahko lociralo se bolj natancno v katerem delu je napaka.

Napake s kodo vezane za to enoto so opisane tukaj:
- Koda: Izberi vse
Fault location Fault type
00003 - Control unit defective
00234 - ACC sensor misaligned
00446 - Function impairment due to low voltage Lower limit not achieved
00447 - Function impairment due to high voltage Upper limit surpassed
00456 - Entry and start authorisation control unit - J518 No signal/communication
00457 - Onboard power supply control unit -J519 No signal/communication
00466 - Steering column electronics control unit -J527 No signal/communication
00466 - Steering column electronics control unit -J527 Implausible signal
00466 - Steering column electronics control unit -J527 Please read fault memory
00473 - Electronic parking/hand brake control unit - J540 No signal/communication
00473 - Electronic parking/hand brake control unit - J540 Implausible signal
00532 - Supply voltage Upper limit surpassed
00532 - Supply voltage Lower limit not achieved
00652 - Gear monitoring Implausible signal
00778 - Steering angle sender -G85 No signal/communication
00778 - Steering angle sender -G85 Implausible signal
01042 - Control unit not coded
01044 - Control unit incorrectly coded
01299 - Data bus diagnostic interface -J533 No signal/communication
01299 - Data bus diagnostic interface -J533 Implausible signal
01314 - Engine control unit No signal/communication
01314 - Engine control unit Implausible signal
01314 - Engine control unit Please read fault memory
01315 - Gearbox control unit No signal/communication
01315 - Gearbox control unit Implausible signal
01315 - Gearbox control unit Please read fault memory
01316 - Brake control unit no signal/communication
01316 - Brake control unit Implausible signal
01316 - Brake control unit Please read fault memory
01317 - Control unit in dash panel insert -J285 No signal/communication
01317 - Control unit in dash panel insert -J285 Implausible signal
01317 - Control unit in dash panel insert -J285 Please read fault memory
01319 - ACC control unit -J428 No or incorrect basic setting / adaption
01330 - Convenience system central control unit -J393 No signal/communication
01330 - Convenience system central control unit -J393 Implausible signal
01330 - Convenience system central control unit -J393 Please read fault memory
01517 - Trailer recognition control unit -J345 No signal/communication
01517 - Trailer recognition control unit -J345 Implausible signal
01517 - Trailer recognition control unit -J345 Please read fault memory
01577 - Switch-off due to overheating
02001 - ACC data bus defective
02002 - ACC sensor heater -Z47 Electrical fault in circuit
02003 - Driver identification control unit -J589 No signal/communication
02003 - Driver identification control unit -J589 Implausible signal
02012 - ACC safety shut-off
02084 - Component protection No or incorrect basic setting / adaption
02095 - Component protection active
02213 - Function shut-off based on brake temperature
V nobenem primeru, pa ne vzemaj ven nobenih varovalk, ki so vezane na vse enote (v povezavi z ACC-jem), ker to lahko povzroci zelo tezko brisanje napak.