Ihave a 2010 A5, gearbox malfunction warning comes up but still ok to drive. Took to the dealer who sold me the car as I have a warranty with them (not Audi dealer) I have to take it to them as part of warranty procedure. They put a scan tool on and came up with the following codes: ECM: U040200 Invalid data from TCM. P0420 CAT efficiency AudiA5 / S5 / RS5 Coupe & Cabrio (B8) - A5 Gearbox/transmission issue - Hi Guys, Looking for some help here, A5, 2012, Auto, 2ltr petrol it started a few weeks ago, when driving I am getting a slight noise, like a whine or rubbing noise from the transmission, its not there every time and is very slight, only really AudiB8/B8.5 A4 Quattro 2.0T Transmission Service Kits Automatic; Manual; Sort By and Liqui Moly fluid to service your transmission For 8-speed automatic transmissions only . Brand: ES#: 4007157 Mfg#: 0BK398009KT4 Qty: Availability: In Stock $165.99 there was an issue signing you up, please try again later. First Name: Asfor lag from a standing start. Audi usa posted a video on youtube a few years ago about using stronic boxes. Now if i can get the details right from memory, at a standstill the dual clutches have reverse and 2nd gear selected. When forward movement is detected it would shift from 2nd to 1st creating a slight delay. Therunning symptoms that a fault within this mechatronics unit will cause include limp home mode, harsh gear change and erratic gear selection. As the S-Tronic/0B5 gearbox mechatronics failure advances, these symptoms progress further into critical transmission failure: sticking in gear, deactivation of half of the gears, no reverse or gears HiJust joined the forum having had a very bad experience of my 05 Audi A4 Automatic, just out of the garage March 2010 having had to get a reconditioned gearbox, cost me £2700. Just today the gears light started flashing on the dash. phoned garage and the ECU is now giving problems that is the computer, have been quoted £1300, was Ibelieve you will either need to obtain a manual transmission specific engine controller part number (which will require Immo matching that VCDS cannot assist with) Alldata and information about the Audi A6 C7. Review with faults, problems and what to check on a used Audi A6 C7. The buying guide. the same platform is also used on the smaller Audi A4 B8, the larger Audi A8 D4, the Audi Q5 SUV and many other models. The S-Tronic dual-clutch automatic gearbox is quite common on the Audi A6. CommonAudi Transmission Problems in A4 and A6 Models. With proper maintenance, most transmissions are likely to survive years. However, the Audi owners don’t have that much of luck, especially people driving an A4 or an A6. It is exclusive to Audi A6 transmission problems. The A6 models have automatic, CVT, and Multitronic AudiS4/A4/A4 Cab (B8 Chassis) . AudiSport Registered User. Joined Dec 23, 2006 only once the car and gearbox has warmed up. This pulling away issue aside, the gearbox performs perfectly in all other driving situations. Black Pearl Registered User. Joined Dec 8, 2017 Messages 35 Reaction score 29 Points 18 Location California. Feb 8, Jac35ev.