Oderfla

Hello good morning. A question colleagues. In my 2006 s500 w221, it has two batteries, one in the front in the engine compartment that is only for starting the 12 v35ah engine and is acid and another in the trunk agm of 12 v 95ah for consumers and extras. My question is. When the rear battery is changed, do I have to register the battery in my car????. Or is it just set and done. The two batteries in my car are the original Mercedes ones. Forgive the question and my ignorance. but I would be interested in knowing this to do things right. Greetings to all and happy Sunday 👍👍👍 I have a XENTRY / DAS diagnosis

streborx

The batteries, although MB branded, can't possibly be 18 years old. There should be a date code sticker somewhere on them for warranty purposes. If you look, you'll find them. If they're more than 5 years old, you might want to think about replacement. Most auto stores will do a battery health test for you, no charge. My understanding is that you need to do a coding change if you replace the battery with one having a different AHr rating, but MB doesn't use the registration process as do some other brands.

Oderfla

[QUOTE=streborx;8936735]Las baterías, aunque sean de marca MB, no pueden tener 18 años. Debería haber una etiqueta con el código de fecha en algún lugar para fines de garantía. Si miras, los encontrarás. Si tienen más de 5 años, es posible que desees pensar en reemplazarlos. La mayoría de las tiendas de automóviles harán una prueba de estado de la batería por usted, sin cargo. Según tengo entendido, es necesario realizar un cambio de codificación si reemplaza la batería por una que tenga una clasificación AHr diferente, pero MB no utiliza el proceso de registro como lo hacen otras marcas.[/QUOTE

Hello friend. The batteries in my cars are new and purchased from Mercedes. That's why I said they were original Mercedes. I bought them and installed them myself. but I have not seen any battery registration process. That's why I asked if my car needed to be searched. since since I changed it there are no errors and everything is perfect. But I was left wondering if it was necessary to register. hence the question. I have looked in several forums. on ggogle and on you tube and there is nothing on that topic. in this model w221. So I understand that it is not necessary. thanks for your reply. all the best.
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JohnLane

I have replaced many batteries in them. Start batteries and the big one in the trunk. Never needed to do any coding.

BenzNinja

iTrader: (4)

nothing

streborx

I think the 95 AHr battery in the boot is the starter battery.

JohnLane

Nope! Small battery under the hood is start battery.

BOTUS

sure can the old ones were MUCH better made - if you take the back one out and fight the stupid screw top lids and top it up till the tissues is moist will do another 5 years
I only just swapped my front one - not sure it did anything to help - top that up and charge it'll keep going too (front one basically does nothing anyway)

there is NO registration required on these ones (its just coming back with the latest cars)

BOTUS

depends late 2005 to mid 2007 get two batteries - then after a mini facelift they crammed just one big one up front

BOTUS

depends late 2005 to mid 2007 get two batteries small one up front starts the car - then after a mini facelift they crammed just one big one up front

streborx

What else is there in the car that demands a 95 AHr battery?

Oderfla

Gracias a todos por sus respuestas. y la gran ayuda que brindas como siempre. Saludos cordiales a todos. Saludos de españa.
👌👌👌

BOTUS

the engine ECU is a few amps and the starter has to be less than 35a/hr as that's all its given

the key in the run position engine off (exterior lights off) pulls 37 amps - add in stuff like heated screens front and back which do stupid stuff then add 4 windows going up and down and there you have it

JohnLane

You guys across the pond must get a different version then what I enjoyed here in the USA. My 2008 S65 (May or June of 2008) still had the round fog lights and two batteries. But it did have the diamond stitched hides.

BOTUS

maybe the fully laden ones took longer to go to single battery ? or was the cross over just a bit later than I thought (I was pretty sure we have people saying they have a single large front on late 2007 year cars) - mate with a mid 2009 has a the single battery (its not the NTG3.5 real facelift of late 2009)

justchangeoil63

I just throw new ones in and they work, no need to register.