Help with A5 fault

[VeejA5]

Hi there,

So 2 days ago, I noticed that the hazard lights stopped working (the individual indicators all work). Then the engine management light came on. I also noticed that the start stop is not working, (but this might be because the engine management light automatically turns it off. )

Today I also got a low battery warning message on the dash. 

I'm taking it in to be looked at tomorrow, but just wondering if anyone had any ideas on what it could be? I did a visual on the battery and the connections all seem ok. 

[Magnet]

Hello Vijay, 

Thanks for being in touch. 

Sounds typical of battery issues - which would tie in with the anticipated service life of a battery fitted to a car with a stop/ start system. Worth getting the alternator output checked at the same time, but I wouldn’t anticipate any problems there. 

If it needs a new battery, then it becomes important that you spend wisely on its replacement, rather than any ‘brand x’ make which the garage may obtain from their local motor factors. Battery efficiency is vitally important these days.

For me, I only use Varta/ Bosch with a minimum of 4 years guarantee. These can be delivered to the door by on line specialist suppliers such as Battery Megastore, Tanya, Plymouth Batteries etc. All of these, and more, sell on eBay, where you will normally get free delivery. 

Perhaps you could let us know how you get on. 

Kind regards,

Gareth. 

[VeejA5]

Thanks Magnet, I will update when I have more information.

Funnily enough, this morning the start stop and the hazard lights were working! 

The engine light is still on however, showing code 'U0140 - Network'.

No idea what this means. 

[VeejA5]

So I was told the battery was faulty. It has been changed and no engine light for the last 80 miles, so looking good so far. 

[Magnet]

Thanks Vijay,

What battery did they fit? 

Kind regards,

Gareth.