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  1. Dippy

    Audi S4 B8.5 can’t select ADS and efficiency mode

    The primary purpose of ADS is to control the 3 cost options of dynamic steering, dynamic suspension and sports differential. Of the 3 the latter is of highest value benefit, to the subset of owners whose driving style pushes the standard rear differential beyond its limits. The dynamic...
  2. Dippy

    Audi S4 B8.5 can’t select ADS and efficiency mode

    ADS was never standard. I have read that if the button is retrofitted it works properly.
  3. Dippy

    S4 B8.5 Electrical issues

    How old is the battery? Seemingly unconnected errors often occur when the voltage gets too low.
  4. Dippy

    Gearbox / rear diff oil change intervals ??

    I don't know about the manual, but the s-tronic transmission has a 38K miles ATF & filter change schedule. The rear diff is officially sealed for life.
  5. Dippy

    2013 B8.5 S4 oil consumption issues

    Yours is a 2014 build car? Did it get the CREC engine? If so it appears that the injectors are keeping carbon build-up low and cleaning is not needed.
  6. Dippy

    2013 B8.5 S4 oil consumption issues

    If it is a bad PCV then the supercharger needs to be removed to replace it. Other items which could be replaced at the same time are the waterpump and thermostat. Both are items that can leak and/or cause problems at higher mileage. Then there's the crank pulley and tensioner. The former has a...
  7. Dippy

    2013 B8.5 S4 oil consumption issues

    BTW whilst some oil consumption can be considered normal, frequent filling is not. The only time oil goes into my engine is at the annual service.
  8. Dippy

    2013 B8.5 S4 oil consumption issues

    PCV is the main cause of oil consumption on this engine. When you have topped up, how much effort was it to remove the fill cap? A bad PCV can create quite a vacuum. It is possible to get a dipstick which fits this engine (although there isn't one specifically for it). I don't recall the part...
  9. Dippy

    Update on the S4 Recently Purchased

    If you can spare the time, go over to Audizine and read about 0B5 transmission experiences there. There are plenty of reports of problems and a few about the mechatronics repair kit. Maybe you'll get a better idea about how bad yours is and how urgent it is to take action.
  10. Dippy

    Update on the S4 Recently Purchased

    Is this a 2009-2011 car? The early gearboxes did suffer from mechatronics problems. There is a mechatronic repair kit available. But did I misread something? I thought that your problems were TCU comms and a possible clutchpack slip. Mechatronics is all about gearchanges.
  11. Dippy

    Update on the S4 Recently Purchased

    As you may have seen there's lots to be found about this gearbox on the web. This is worth reading: https://forums.ross-tech.com/index.php?threads/15276/
  12. Dippy

    Update on the S4 Recently Purchased

    Whilst the hill start judder does point to clutchpack wear, the P174000 implies an issue with the sensor and/or wiring rather than overheating. The dates of the DTCs are relevant - sometimes they can be old and so not necessarily indicative of a current issue. But at 117K miles with only one ATF...
  13. Dippy

    B8 Headlight Washer How to Open to clean

    Do you mean the jets which rise out of the "bumper"? If so you can carefully prise the lids and pull them up, but they are spring-loaded. The only other way to access them is to remove the bumper.
  14. Dippy

    2015 S4 b8.5 74k Miles

    As @ninjag noted, in theory the port injection on the CREx series engine should prevent significant build-up of carbon at the valves. Based on the few photos I have seen of CREx valves compared to the many of the previous engine it appears that this is proving to be the case. PCV failure was a...
  15. Dippy

    2015 S4 b8.5 74k Miles

    FYI mine's also a 2015 with CREC engine and the car has done almost 26K miles. It uses negligible oil - between annual services the MMI might drop 1 or 2 bars at most.
  16. Dippy

    2015 S4 b8.5 74k Miles

    Audi engines can burn oil but it should not be considered normal. Have you checked for any signs of oil in the coolant? Any signs of exhaust smoke? Also how easy is it to remove the oil filler cap? If the PCV is malfunctioning then as well as the oil level dropping it can create a vacuum beneath...
  17. Dippy

    B8.5 S4 to B8.5 RS4?

    And likely that's where they would stay - who could live with the turbo lag of those two cars these days?
  18. Dippy

    Battery Query

    Yes AGM is good for short journeys. Since you have the low battery warning the battery management system will have switched to a maintenance mode which may not be suitable for a brand new battery. Because of this you should code the new battery. If you are doing the coding then you will be able...
  19. Dippy

    Goosey built S4

    I think big cities command higher premiums. My daughter moved from North Wales to Liverpool and her premium doubled. And she parks in a secured area of her group of flats. But the low NCD could be responsible too. I hadn't heard of AIB. I've had policies underwritten by Markerstudy in the past...
  20. Dippy

    Goosey built S4

    I haven't used Chris Knott for years - I think they wanted to get out of the mods market. Some mainstream insurers will cover mods but I find there are always caveats. I recommend going to a specialist broker. I currently get Safely Insured (was Sky) and A-Plan competing. The owner of A-Plan now...