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Message: <blockquote data-quote="DDgreystar" data-source="post: 3181237" data-attributes="member: 5158">i think this is a typical AYC ACD scenario that has asked from time to time; in short there are few types of generic scenarios:1. You have just done a AYC oil change recently, and eveything seems fine until the 3 lights got lighted up abruptly.Suspected cause: Inaccurate manner of servicing and changing AYC oil, thus resulting to unsuspecting air being trapped within the chamber linning of the AYC mechanism.2. No oil change done recently but unsuspected long overdue AYC oil in operation: the AYC oil in use over here is the recomended originial Mitsubishi DIAQUEEN (if not mistaken on spelling), when AYC oil has been overdue (just like any other mechanical parts of the car, ie. engine oil, gearbox oil, front, center LSD oil over due = oil losing its viscosity and thus causing further WEAR n TEAR rate on the AYC controlled hardware !!)3. Sudden electrical surge, due to incorrect wiring ie. Alarm fixing, gadgets fixing ie meters, ecu or voltage stablizer, ICE fixing....wiring is a sensitive issue, it can cause jerks, AYC lights, burnt fuse, abnormal surging tapping sound when boosting4. Uneven wear of tyre, ie. tyre thread below recomended operating thread or areas in wheel base out of operating alignment;ie. lower arm, upper arm, bushing might be lose or worn off; thus disturbing to the wheel operation, the signals feedback may cause temporary 3 lights ON scenario tooin short the procedural way is to check via the MUTII or even the latest MUTIII which i heard is widely available; however having the tool to output with error codes is nevertheless effortless with a simple plugon, further diagnosis and resolution depends very much on workshop experience, which can be further subjective.</blockquote>