Engine managment light

[Tony_K]

Hi Guys,

 

I recently bought a 2015 A6 Avant automatic. Im having trouble with the engine management light coming on intermittently and the error message saying start / stop system disabled. The issue only happens in the morning or when i haven't driven the car for a while and i begin to accelerate hard or drop a gear say to catch an amber light or overtake a truck. once i turn the car off/on and accelerate normally the light stays off. If im driving the car for about 10 - 15 minutes ill have no issues at all no matter how hard i accelerate. Anybody else come across an issue like this. 

Thanks for your help.

Tony.

[Magnet]

Hello Tony,

Sorry to hear of your issues. A couple of pointers to perhaps follow:- 

Did you check before purchase/ since purchase, if the car has been subjected to an emissions recall? Such EML -on  problems have been noted following recalls. See under this heading on the forum.

Re. Stop/start - Worth checking that the battery is the original and is still in serviceable condition (as it should be at 3 years old). It is possible that the battery has been swopped pre sale for an older less serviceable one.

Kind regards,

Gareth. 

[Tony_K]

HI Gareth,

Thanks for the help. Ill try and check with my local dealer if the car would be subject to a re-call and i might have a look at the battery myself. the car was bought from a reputable dealer with full digital service history so i think the battery might be OK i wouldn't see any need to swap i out but worth a look i suppose. My gut feeling is that it is something to do with emissions hence only happening when accelerating. perhaps its a sensor issue. 

Thanks again,

Tony.