TT Battery Woes

[Rocko]

I stupidly left the lights on the TT prior to Christmas and completely discharged the battery, so I replaced it with a new one and all was fine. Cleaned the car on Christmas day and parked it out the back of the house to make room for visitors.

I've gone to start the car today and the battery is completely discharged again, can't be charged and it won't jump off another car.

Any ideas? Can't be buying new batteries every time I want to drive it!

 

[Marty Lad]

Faulty new battery possibly? Should be a warranty on it, I’d be bringing it back to where I bought it for a replacement.

 

[Cartunes]

I WhatsApp 'd advice Craig. Let me know if I can help

 

[purplea4T]

Fresh mk4 Golf battery here if you need to get it moved/investigate. Just off the ring road.

 

[Lappintyre]

I’ll start the bidding at £500

 

[Smurf.]

Im in exact same boat with a car. Stuck new battery in and it lasted a day. All pointing at alternator for me.

 

[carmad.]

to be honest new battery’s are rubbish unless your driving they all the time

 

[purplea4T]

Actually a full mk4 here if you need relays/fusebox/alternator.

 

[Woodcutter]

We see this so often, and people always blame the battery, and I can assure you it’s very rarely the battery at fault. Something is causing the battery to fail by some form of parasitic drain.

Take it to someone who can identify the drain like @pobmk4 betore wasting any more money on batteries.

 

[Rocko]

Del has kindly offered to give it a look over. Then once its sorted, it's for sale.

 

[purplea4T]

Del has kindly offered to give it a look over. Then once its sorted, it's for sale.

Good stuff, I'd say he'll get to the bottom of it. Parts here if you need them, cars going for scrap so all free.

 

[Rocko]

Many thanks!

 

[pobmk4]

New batteries are perfectly fine asking as you are using the correct rated battery for your car AND a reliable manufacturer (I will only use 3 battery types in my workshop and not one of them is quantum)

Get a parasitic drain test done, it's the only way to properly confirm your loss of charge. You can record the mA being drawn by the faulty component and confirm the repair when it has levelled out within the specification for the vehicle. #testnotguess

 

[Rocko]

So the battery in the car is sitting at 1 volt, the old dead battery is charging in the garage and Del is coming back when everything is ready to go.

Both were Lion from ECP.

Then it'll probably have to come to you to be repaired @pobmk4

 

[Cartunes]

So the battery in the car is sitting at 1 volt, the old dead battery is charging in the garage and Del is coming back when everything is ready to go.

Both were Lion from ECP.

Then it'll probably have to come to you to be repaired @pobmk4

Don't exaggerate Craig..... it was 1.7 volts!!!! See you when the trickle charger/ conditioner does its stuff. I'll check the current draw at rest but happy to send it to Mr VAG to get it properly sorted if I struggle to locate it.

to be honest new battery’s are rubbish unless your driving they all the time

It's more that modern cars are far more electronicky! But sadly, designers (felt tip fairies) don't make any more room for the batteries...... we just try to be clever with power management instead.

 

[Jamesc]

With TTs The alarm module in the rears are prone to corrosion and cause a battery drain Common issue on them, could be a possible issue

 

[Coog]

Lion battery from ECP is likely your problem.

 

[Ghisallo]

I had a similar problem, replaced a battery in an A4 myself, it (Bosch) went dud fairly quickly so fought with ECP to get another one under warranty, which I fitted myself and which also also went dud. So I left it into a local garage who put a Yuasa battery in which has been fine for a couple of years. I had read somewhere that the car has to be programmed to a new battery, so I assume that's what the garage did?

 

[Rocko]

The issue somewhat rectified itself. I think the new battery was a dud so I charged the old one and its grand now. Needs driven more tbh.

 

[Coog]

If you can get power out to it I would highly recommend one of those ctek battery conditioners.

 

[Rocko]

Bought one last week, great job!

 

[Wild Thing]

Just a thought when you say old battery is solving problems, has the TT start/stop, if so did you go like for like with an AGM battery

 

[Rocko]

No stop start, not sure it was around in 2000

 

[Coog]

No stop start, not sure it was around in 2000

Was around long before that believe it or not.

 

[Ghost]

Del has kindly offered to give it a look over. Then once its sorted, it's for sale.

Good selling technique