Stop/Start stopped working. Got my '18 Q7 in August. S/S worked all the time. I know it annoys most of those on this forum but it doesn't bother me and any gas mileage increase is welcomed. However, the past few weeks it no longer works. The S/S button has not been disengaged. I read up on it in the manual and just can't figure out why it isn't Replaced battery which was confirmed to be bad and it still won't start. Tried jumping it from the engine and nothing happens. I have dashboard lights and radio. No clicking when I try to start it. Any advice would be appreciated. I changed the battery a year or so ago and did not have this issue where it wouldn't start. After 4 days of starting it every few hours, I figured it was just fine and just a random occurrence. I ended up not needing to touch the vehicle for 3 days. When I tried to start it, the same thing happened as before. Accessories are on in the car, no crank when trying to start, when turning the key to start, the accessories would then shut off. My 2009 Audi Q7 battery is dead and the fob is not working I cannot get into the vehicle with the keychange the - Answered by a verified Audi Mechanic We use cookies to give you the best possible experience on our website. Change the battery. It is essential to observe the warning information on the battery and in the vehicle’s manual. Only install a battery with an off-load voltage of >12.5 V. Switch off the engine and all power consumers before removing or installing the battery. Avoid short circuits caused by tools. Change the battery in the vehicle. Received 2 Likes on 2 Posts. Quote: Originally Posted by Fun4stuff. Found it in my manual of 79. Looks like it could be because of high power consumption, environmental conditions, battery, engine temp, etc. Once the AC or Heat reach the desired temperature setting, then stop/start works fine for me. Reply Like. 0. 01-22-2013 11:02 AM. AK_TTuner. TT (Mk1) Discussion. 4. 12-05-2003 07:10 AM. Q3 Discussion - Reprogram Keys After Battery Change? - Hi guys, I have a 2015 Audi Q3. The battery on one of my remotes was low so I decided to change both key batteries and now, neither keys will work to unlock/lock the car and when I get inside, I need to press 1. Check Connections. If your Audi A4 won’t start after changing the battery, one of the first things you should check is the connections. Ensure that both terminal connections are tightly secured and free from corrosion or any debris. You can use a wire brush to clean off any dirt or rust on the terminals. Q7 MK 1 Discussion - 2007 Q7 4.2l with 11 trouble codes. - About a month ago my neighbor was have issues with his 2007 Q7. Battery seemed to be failing and causing drivability issues. I checked the alt output and there was nothing but battery voltage. I helped him change the alternator and it now had 14.5v was Okay, that sounds like you got a discharged "new" battery. Regardless of reason (not charged battery or bad connections), it is symptomatic of not having sufficicent current and voltage form the batery to run the computers or start the car. ljUf.