Pretty much a car immbocile.

 

A few weeks ago my original car battery died so I called into my local car accesory shop and he replaced the battery. Since then I have had intermittment issues with the start stop not working. Being a taxi driver this can be abit of an issue when you are stuck in traffiv and it doesnt start lol. Today it happened a few times again and then just wouldnt start no matter what I tried. Stuck at a set of lights for 45 minutes. I gave it one more try and it worked.

 

My question is, could the quality of the new battery be the cause? It is made by Lion and does say start stop on it.

 

Cheers for any help.

 

Andy

Sorry, the receipt says accustart 096 start stop

https://www.thebatteryshop.co.uk/096-car-batteries-1882-c.asp

 

https://batteryworld.varta-automotive.com/en-be/why-special-battery-start-stop#

Edited 31 July, 20232 yr by Donweather

24 minutes ago, Donweather said:

https://www.thebatteryshop.co.uk/096-car-batteries-1882-c.asp

 

https://batteryworld.varta-automotive.com/en-be/why-special-battery-start-stop#

 

Thanks for replying but Im not sure what Im meant to tell from those links. The battery I have is start stop and is 096. When I put my reg in that site it links to another 096 battery. Sorry if Im missing something obvious.

Was the battery adaptation coding carried out after the new battery was installed, by the shop?

If not, ur car will still think the old battery is still there, and treat it like the old one.... literally.

 

19 hours ago, Toonbart said:

Today it happened a few times again and then just wouldnt start no matter what I tried. Stuck at a set of lights for 45 minutes. I gave it one more try and it worked.

When you say it wouldn't start no matter what you tried do you mean the battery didn't have enough power to turn the engine over, or the battery had enough power to turn the engine over but it wouldn't fire up, a bit more specific info might be helpful.

50 minutes ago, cnc said:

 

When you say it wouldn't start no matter what you tried do you mean the battery didn't have enough power to turn the engine over, or the battery had enough power to turn the engine over but it wouldn't fire up, a bit more specific info might be helpful.

It could also come from the ´start engine´ which sometimes have contact issue. But it would be quite surprising that this second issue comes at the same time with your battery issue… 🤔

So are you (JR RS) saying that if you install a brand new battery you have to use VCDS or go to a dealer or independent to "code" the car to accept the new battery?

 

1 hour ago, Deeje said:

So are you (JR RS) saying that if you install a brand new battery you have to use VCDS or go to a dealer or independent to "code" the car to accept the new battery?

 

Yes he is, and entirely correctly AIUI.

Does this mean the car won't start manually - not via stop start?

 

Normally when stop start is incorrectly coded it doesn't operate - ie shut engine off- which doesn't seem to be the case here. I'd suggest one of the battery leads has been disturbed or incorrectly fitted on battery installation so is not making a circuit suitable for the high current starter motor.

 

 

Edited 1 August, 20232 yr by bigjohn

2 hours ago, Deeje said:

So are you (JR RS) saying that if you install a brand new battery you have to use VCDS or go to a dealer or independent to "code" the car to accept the new battery?

 

 

Yes.

U can use VCDS or OBDEleven (pic below) to do it urself.

A good battery technician/shop will know how to do it.

A friendly dealer can do it for u.

 

Plenty of how to guides & videos on the internet.

 

I don't suppose you know what kind of battery was fitted before? 

AGM or EFB? And how many AH it was?

 

You only need to recode the battery if you change the type of size of the battery.

If the coding is wrong it will mean that perhaps the stop start might not stop the car when it could do.

 

It shouldn't mean that the engine won't start unless there is another problem.

 

Without understanding why you changed the battery in the first place it's difficult to suggest a cause.

Did you have warning messages I the dash saying "battery low" or were you having problems starting before?

 

When you try to restart what happens?

The starter turns the engine but the engine doesn't start? Nothing at all? 

Do you have the normal dash lights when trying to start? 

 

Have you checked that the battery terminals are tightening correctly? 

 

 

@Gabbo although you are technically correct that no coding is needed if the same spec battery is installed, cranking amps and capacity is very likely to be different between manufacturers so coding in is advisable.  It will also take some time (does anyone know how long?) for the car to recognise a new unit has been installed so initially it will still think the old duff unit is present and so charging appropriately.  I'm fairly certain this period is nil if coded in.

 

@Toonbartcan you share the symptoms that lead to the battery change and also the response of the car when it doesn't start?  Sounds to me that there is an underlying issues that a new battery might be used to mask.  The starter on my old octavia was very dirty and pulling lots of current to get it to start the car.  One garage said it needed a new battery, but, cleaning of the starter solved 80% of the issues for much less expense.

I replaced like for like batteries on my mk3 Octavia without coding & stop-start was working within 500m of the first drive.

I noticed no problems with charging since then.

 

A good software should be able to recognise quickly the behaviour of a new battery and relearn.

 

I'd expect the coding to be more useful if you change the type or capacity.

 

 

If the car occasionally doesn't start but starts well some time later I'd suspect a bad connection on the battery or perhaps a ground terminal.

11 hours ago, Gabbo said:

You only need to recode the battery if you change the type of size of the battery.

 

That's incorrect - even if the new battery has the exact same specs (Ah and A), u still should do the battery adaptation, as good practice.

 

Over time, as the battery gets old, the battery charging and conditioning algorithm will change, to adapt to the aging battery.

 

When u put a new battery in, and do the adaptation - it will reset the charging and conditioning pattern, that is ideal for a new/fresh battery.

Edited 2 August, 20232 yr by JR RS

Whilst I agree that it would be best to do it if you have the means, the car will surely recognise pretty quickly that the battery is different & restart the adaptation itself.

Charging or changing the battery is a pretty common task that many will do themselves & im sure VW would take account of this in the software?

 

Particularly in the case of the OP, battery coding shouldn't cause the problems he is reporting.

 

Even if the coding was wrong, I'm sure the car will charge the battery even if the charging profile is perhaps not optimal for the type.

 

As the battery was changed at a battery specialist, it's perhaps worth asking them to check the coding as you suggest which they should know how to do.

 

I'd be also asking them to check the battery connections, battery voltage & alternator output to try to discount them from the cause.

 

 

 

Edited 3 August, 20232 yr by Gabbo

@Gabbo Read again.  OP states it was changed at their "local car accesory shop".  That's far from a battery specialist.  I did a google search for the type of battery the OP said was installed and the results are vague at best.  Most accurate result was an EFB battery.  If the original was AGM then coding is absolutely required.

Sorry all for the delay in replying and thanks for all the help. Since my OP the car has performed ok, however I have been using the button next to the gear knob to turn off start stop each time I set off. Have also just got back from a driving holiday from Newcastle to Wales to Cornwall and back with no issues.

 

However today it happened again when dropping off at Newcastle airport. Dash lights all seem normal, bower there was just a clicking noise. This is just instant and not the noise you get when a battery dies whilst trying to start.

 

Also, the break pedal was very heavy to depress. Got a jump start, made it home and now starts as normal.

 

The guy at the shop that fitted it, did connect a laptop and do something after installation.

 

I have no idea what the previous battery was but it was fitted from new.

Sorry all for the delay in replying and thanks for all the help. Since my OP the car has performed ok, however I have been using the button next to the gear knob to turn off start stop each time I set off. Have also just got back from a driving holiday from Newcastle to Wales to Cornwall and back with no issues.

 

However today it happened again when dropping off at Newcastle airport. Dash lights all seem normal, bower there was just a clicking noise. This is just instant and not the noise you get when a battery dies whilst trying to start.

 

Also, the break pedal was very heavy to depress. Got a jump start, made it home and now starts as normal.

 

The guy at the shop that fitted it, did connect a laptop and do something after installation.

 

I have no idea what the previous battery was but it was fitted from new.

 

Also just had a battery test report that seems to rule out the battery

 

 

Issue turned out to be starter motor

On 30/08/2023 at 10:19, Toonbart said:

Sorry all for the delay in replying and thanks for all the help. Since my OP the car has performed ok, however I have been using the button next to the gear knob to turn off start stop each time I set off. Have also just got back from a driving holiday from Newcastle to Wales to Cornwall and back with no issues.

 

However today it happened again when dropping off at Newcastle airport. Dash lights all seem normal, bower there was just a clicking noise. This is just instant and not the noise you get when a battery dies whilst trying to start.

 

Also, the break pedal was very heavy to depress. Got a jump start, made it home and now starts as normal.

 

The guy at the shop that fitted it, did connect a laptop and do something after installation.

 

I have no idea what the previous battery was but it was fitted from new.

 

Also just had a battery test report that seems to rule out the battery

 

 

That battery report is useless in all fairness.

They have put it as a standard battery, not AGM or EFB meaning it will not read or spec the battery correctly - it’s also showing the Ah is 1026 of 760, that’s like saying your pint glass has 1.5 pints of beer in it.

Although the starter may have been faulty, I would be getting that battery double checked again