Stratman59 Posted January 17 Share Posted January 17 Hi all. A few months ago my Add Blue warning light came on (A4 Avant, 2016) Diagnostics showed a complete system failure and a bill approaching £3k. I left the dealer and went to my local trusted garage. He agreed with the diagnostics and suggested a cheaper solution. Completely bypass the AB system and flash the computer system to tell it there is no more AB. This cost around £500. Everything is fine except before, on a long trip driving at a steady 65, I could get an average in the high 70's per gallon, even 80mpg. Now doing the same journey the best I could do was 64 mpg? Same load, similar weather, tire pressures all correct. I understood that AB had nothing to do with economy and was only for emissions. Quote Link to comment Share on other sites More sharing options...
Steve Q Posted January 18 Share Posted January 18 Sounds like it's had a remap too. Quote Link to comment Share on other sites More sharing options...
Hammie1982 Posted January 18 Share Posted January 18 £500 just to map out the AB system is alot. I had the same thing done on a Seat Alhambra 2015 for €200 a while ago. And it didnt have any effect on the MPG of the car. I would be going back to the people that mapped out the AB system and ask them exactly what else they done at the same time. I know costs are going to be different between different places etc, but i dont see why you would be paying more than double the price it cost me here in ireland. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.