HI. I need to change the battery on my recently purchased A5 but I can't find a code for the entertainment system in the paperwork etc. Do I need one anyway? If so where's best to find it?

Welcome Mark,

I’m not sure about a code for your entertainment system, but you can buy a ‘code saver’ device which will maintain some power while the battery is switched over. 

What you will need however, is to have the new battery coded to the car, otherwise the alternator will treat it as the old battery, and could cook it - and the alternator. 
What brand of battery are you buying, and from where? 
Kind regards, 

Gareth. 

My A5 is a 2015 model and the battery is a Lion AGM Stop/Start 019 95AH 850CCA

 

Um! Bless you, and anyone else who puts their trust in Lion batteries. As I’ve said on here before, if I were to compile a list of batteries I wouldn’t own - even if given to me- Lion would be top of that list. 
As I understand it ECP are now re branding them to Starline - another ECP sole brand. Nothing to do with the reputation of Lion, of course! 
If this car were mine, I would be sending it back, and buying a sensible brand one. 
I’ve bought Exide from Tayna at reasonable cost ( no connection and there are other suppliers).

Kind regards,

Gareth. 

My A5 is a 2015 model. The battery is a Lion AGM Stop/Start 95AH 850

9 hours ago, A5Black said:

HI. I need to change the battery on my recently purchased A5 but I can't find a code for the entertainment system in the paperwork etc. Do I need one anyway? If so where's best to find it?

Hi if you attach another battery to the jump posts under the bonnet that will preserve the entertainment settings while you change the battery, you will need to buy a cheap pair of rubber gloves to wrap round the terminals once they have been taken off of the original battery to stop them shorting out. new battery must be coded to the car, otherwise as Gareth said it will kill the new battery in record time, Lion batteries are absolute garbage, I am not as polite as Gareth.

Steve.

I appreciate your honesty m8. How do I code a battery to my car??

So are you and A5Black, one and the same person. Same location, same year and model, exactly the same post wording! 
 

Strange or suspect-? 

Same person. I've changed my name and no idea how I did it

4 minutes ago, Audi A5 TDI V6 said:

I appreciate your honesty m8. How do I code a battery to my car??

Hi VCDS or the much cheaper option is OBD Eleven Pro, just make sure you buy the token bundle, this will allow you to do many other functions such as rear brakes and coding modules that fail as well as DTC information and DTC clearing, coding your battery is easy with that tool.

Steve. 

Thank you Steve