W213 battery replacement

[105mad]

If I replace the main battery on a 2019 w213 350d, will it need to be recoded or is it self learning?

 

[OneForTheRoad]

Self learning.

 

[toteimerced]

Yep.

 

[Gazwould]

Why is a 2019 battery being replaced ?

 

[BlackC55]

Why is a 2019 battery being replaced ?

Its 6 years old. Its cold outside. They are reliant on very good battery voltage more than ever.

 

[OneForTheRoad]

It's

Why is a 2019 battery being replaced ?

They do more than start it up

My c207 dash would light up like a Xmas tree at times on a 5 year old battery .

Amps start a car , voltage runs systems.

 

[ALFAitalia]

Why is a 2019 battery being replaced ?

Very common these days.....on many modern cars regardless of make. Car are much more power hungry and more voltage sensitive than cars from previous decades.

 

[BlackC55]

I would choose a genuine MB battery too.

 

[toteimerced]

Which is Varta.

 

[OneForTheRoad]

Which is Varta.

Or Exide .

 

[toteimerced]

Varta is German, Exide is American, I know which I’d prefer. probably all made in China though.

 

[Alps]

my 2019 has been through two batteries, one covered under warranty, 2nd one not as warranty battery doesn't have warranty... ? in just over a year the first replacement died because some keyless module wouldn't shut off, software update and another new battery later been the best its ever been, even leaving it for a month car started on a trickle charger most of the time now.

 

[OneForTheRoad]

my 2019 has been through two batteries, one covered under warranty, 2nd one not as warranty battery doesn't have warranty... ? in just over a year the first replacement died because some keyless module wouldn't shut off, software update and another new battery later been the best its ever been, even leaving it for a month car started on a trickle charger most of the time now.

My 2018/19 glc is on its 2nd AGM. 39,000 miles. Previous owner ,short school runs killed it.

 

[BlackC55]

Which is Varta.

Made to MB specs. They are not all the same.

 

[OneForTheRoad]

Made to MB specs. They are not all the same.

I used to produce circuit boards for mercedes airbag modules , although most were the same by design, the ones for mercedes were always ran with high end components. Capacitors , resistors, rom chips etc etc .the process was at mercedes asking also, Fiat ones were basically cheap as !!!

 

[toteimerced]

Shame they don’t use high end components for the terrible AdBlue systems. An aftermarket battery with a five year warranty, for half the price, will do me fine.

 

[OneForTheRoad]

Shame they don’t use high end components for the terrible AdBlue systems. An aftermarket battery with a five year warranty, for half the price, will do me fine.

£153 for my Bosch S5 . Seems ok.

 

[105mad]

So going back to my original posting, can I just disconnect the leads, replace battery, re-attach leads just like in the old days?

 

[geoffus]

So going back to my original posting, can I just disconnect the leads, replace battery, re-attach leads just like in the old days?

Yes you can, you may have to reset the windows and mirrors but that’s it.