How to replace the auxiliary battery - W222 - Mercedes Benz S550 - W221 - tutorial

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How to replace the auxiliary battery - W222 - Mercedes Benz S550 - W221 - tutorial | josecitomarin

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Жыл бұрын

How to replace the auxiliary battery
www.fcpeuro.co...
w222
Mercedes Benz
s550
2014 - 2017
Josecitomarin
Jose
FCP Euro Parts:
www.fcpeuro.com/
www.fcpeuro.co...
Auxiliary battery replacement
T20 bit
10 mm
Magnet
Expansion rivet removal tool or screw driver
Battery Terminal 6Nm = 53 in lbs
Same safety tips as the main battery
With ignition off, store the key fob away from the car. At least 7 ft away or 2m
Always check for damage on cable or terminals
When taking the vent tube off be careful, as the battery vapors emitted will damage surrounding components. It's a good practice to cover it and rout it correctly
Negative is usually black and positive is usually red or check on the battery + or - signs
Never let your tool touch any metal while removing the terminals, could cause spark, damage and/or may even get the tool welded to the terminals, specially if you touch both terminals with the tool
Tuck your terminals out of the way so they don’t bounce back and get in contact with the terminals again
Always start with the negative terminal first
Cover the positive cable so it doesn’t touch any metals
Put the vent back on the battery
Always seat the terminals all the way down. Don’t pound the terminals on, because it can cause internal damage
Always pay attention to torch specs. Some terminals are very fragile
Check on the fabrication dates when you buy it. Month and year. No later than a month built
#mercedes
#s550
#auxiliary
#repairjose
#battery
#tips
2017 Mercedes s class
Mercedes S class
m157
s klasse

Пікірлер: 84

@stephenellis2711 17 күн бұрын

Thank you for this tutorial. Just replaced my aux battery in 2017 S550. Everything went very smooth, although battery box wasn't fun getting back into place...crazy engineers 😂

@josecitomarin 16 күн бұрын

Thank you so much for your comment. I’m glad it worked out for you.

@yongzilla85 7 күн бұрын

good video. thank you.

@josecitomarin 7 күн бұрын

Thank you so much for your comment. No problem

@smbeezy 5 ай бұрын

2016 S550 4matic First, thank you so much for the detail video. Appreciate you taking out the time to explain it in depth. I was driving the other day and on my dashboard cluster it said, vehicle leave car running in yellow. Also, it said auxiliary battery malfunction. I just purchased the battery today and going to attempt to change it out. I haven’t noticed any of the electronics not working properly except the passenger seat won’t slide all the way back, but the reclining aspect of the seat works fully as well as everything else on the seat

@josecitomarin 5 ай бұрын

Thank you so much for your comment. Also check your main battery to see how old it is. If it’s more than 2 years old I would think about changing it. It’s better to prevent any problems.

@michaelallen1359 Жыл бұрын

Thanks so much Jose. My Stop/Start stopped working. So to test it, I connected a trickle charger to the posts under the hood overnight. The next day, the Stop/Start function worked. But only for a day or two. I then connected the charger again, just to be sure, and like the last time, the Stop/Start function worked. But for some reason, I attributed this problem to the Aux battery, not the main battery. I came to your channel hoping to learn how to change the Aux battery and was very impressed with how easy it was and your detailed info on how to change it. Then right there at the end, you mentioned your stop/start issues and you fixed that by changing the main battery. Well, I bought a battery but noticed in your comments someone said the new battery needs to be coded? with a scan tool? Explain please. And again. Great job and thank you.

@josecitomarin Жыл бұрын

Thank you so much for your comment. The auxiliary battery does not need to be registered, only the main battery. The car keeps a count of how long the main battery has been in use, and charges it harder and harder as time goes by. When you register the battery in the vehicle (reset the count) that number starts in 0 and the charging system charges the battery softly. To register the battery you need a xentry computer. If you are in NJ I can help. Check if your batteries are older than 2 or 3 years, if they are I would change them. The warranty on them from the dealer, if that is where you got them, is only two years. If you get the one I got from FCP they give you lifetime warranty.

@michaelallen1359 Жыл бұрын

@@josecitomarin LOL I installed the new Main battery this morning ( Before seeing your reply ) And the Stop/Start function has been working fine all day. I'm up in Ontario Canada so I won't be coming your way for a few months. But I will talk to my mechanic about (Resetting) Thanks again man.

@josecitomarin Жыл бұрын

@@michaelallen1359 great! I’m glad is working. It makes a lot of sense for the main battery not to be working. As I mentioned in my video, it is not always the auxiliary battery when you start/stop button doesn’t work. If the computer knows that the car won’t start again, it won’t automatically shut it off. What battery did you use? Hopefully your mechanic can restart the count for you.

@stephenbrown2122 Ай бұрын

I'm reviewing this tutorial to assist with my parent's S550. What a RIDICULOUSLY COMPLEX routine just to check a battery!!! How in the world do you people think Mercedes builds a good car??? No wonder the depreciation is horrendous on these things!!

@josecitomarin Ай бұрын

Thank you so much for your comment. I actually like the engineering of it. Many cars now have the battery in the trunk from different brands. It’s worst when is under the seat, that is really bad. When you have to change the battery under the hood, in most cases it’s a dirty job. Not if it’s in the trunk. They do depreciate super fast. But it’s good for people like me that get them used and do our own maintenance. Good luck with your parents car. Let me know if you need any more help with it.

@Dnasty1 11 күн бұрын

Great video I just got a notice on a 2018 s560 about auxilliary battery i'm guessing it just needs to be changed. They really make that thing hard to get to lol.

@josecitomarin 10 күн бұрын

Thank you so much for your comment. Look bad but it’s really not

@Dnasty1 9 күн бұрын

@@josecitomarin Great i'm going to try this myself not sure how much mechanics charge for this swap. I was wondering do you need to disconnect the main battery when doing this? Also was wondering on a side note I have been having an issue where the trunk no longer opens all the way automatically... is this related to the auxillary battery? The only other symptom i've noticed aside from the dash notification is that occasionally all the parking sensor lights will beep briefly.

@josecitomarin 9 күн бұрын

@@Dnasty1 no need to disconnect the main battery. Just keep in mind the precautions I mention in my video with the rags. With the trunk you just may have to reset the height. You may have programmed a different height by mistake. To reset just push the trunk open all the way and then press and hold the close button until you hear a beep probably 3 to 5 seconds. Try that and if not the battery replacement may do the trick.

@Dnasty1 9 күн бұрын

@@josecitomarin thanks the trunk seems to have a deeper issue. It opens half way and seems to be floppy and lose when I manually raise it fully. I am hoping the battery does the trick. Just curious since you do mechanic work on this car can oil changed be done from above or is everything underneath again.

@josecitomarin 9 күн бұрын

@@Dnasty1 both ways. Take a look at my video with the oil change

@udaynj Жыл бұрын

Fantastic video and explanations. Thanks very much!

@josecitomarin Жыл бұрын

Thank you so much. Make sure you take a look at the other videos too. And if you didn’t already, please subscribe

@pweb4941 Жыл бұрын

Many thanks

@josecitomarin Жыл бұрын

No problem. If you replace it put an odyssey battery. If it died already you definitely have problems with it and it’s time for it to go. Good luck

@ipansota3832 7 ай бұрын

Hi I have w222 model s class my car changed miles to kilometre always and radio some times loose memory mean I have to choose manually any dab Chanel if I go into tunnel You think it’s auxiliary battery

@josecitomarin 7 ай бұрын

Thank you so much for your comment. You most likely have to change your auxiliary battery. But look into both while you are at it. Check the year in your main battery. I replaced both on mine.

@ipansota3832 7 ай бұрын

@@josecitomarin main battery is ok but some one suggested to change both what you suggest ?

@josecitomarin 7 ай бұрын

@@ipansota3832I would change the main battery if it’s older than 2 years. Otherwise change the auxiliary and see what happens

@ipansota3832 7 ай бұрын

@@josecitomarin thanks 👍

@josecitomarin 7 ай бұрын

@@ipansota3832 no problem

@KiatHuang 8 ай бұрын

Excellent video! I have to fix the issue on my W222. My aux battery is good. Where is the voltage converter?

@josecitomarin 8 ай бұрын

Thank you so much. Check in the trunk behind the seat

@philipsgarage 23 күн бұрын

Had the command unit screen go blank yesterday on my S550 and resetting it did nothing. Also noticed that my start stop button is inconsistant when I press it to start the car where it doesn't always respond. Could it be aux battery related? Only had the car about a month so far.

@josecitomarin 23 күн бұрын

Thank you so much for your comment. I would check both batteries for a charge and for the dates. If they are more than 2 years old I would definitely change them. So start there.

@philipsgarage 23 күн бұрын

@@josecitomarin Do you happen to know where the date would be on the factory OEM battery? Couldn't seem to find the indicator anywhere like a normal battery.

@josecitomarin 23 күн бұрын

@@philipsgarage there should be two numbers either in the negative terminal or a marking on the casing the first number is the number of the week it was manufactured and the second one is the year it was manufactured

@philipsgarage 23 күн бұрын

@@josecitomarin Thank you! To my shock, it looks to be the original battery 7/14! I can hardly believe that. Definitely going to be replacing that along with the aux.

@josecitomarin 23 күн бұрын

@@philipsgarage Omg. I’ve heard of many cases like that. They don’t make them like that anymore. But I’m sure that is the reason of all of your problems. Take a look at the video I made with the main battery. I didn’t put the original one. I got one from FCPEuro they have lifetime warranty. Just replaced mine now again and they have me credit for the old one. Make sure you register the new battery

@Rmayrap Жыл бұрын

did you have issues with it or just preventative maintenance? i just replaced the main battery after getting a code on my scan tool but the aux battery seems to be ok for for. im at 48k miles.

@josecitomarin Жыл бұрын

I replaced it just because I was doing all maintenance in the car. No issues

@jetfixer2183 6 ай бұрын

Should always remove negative cable first and put on last on reinstalling. I torqued mine to German torque, goodentite.

@josecitomarin 6 ай бұрын

Thank you so much for your comment. You are correct. And I talk about that in my video about the main battery. But since we have the main battery still connected to the car it doesn’t really make a difference, just have to be careful doing it and cover each terminal.

@TheBstegold 5 ай бұрын

Actually the start stop worked and then stopped… I ran a diagnostic using Creader elite ( this scanner does not have reset softwares. It must be purchased!) and it showed up a series of errors including radar etc.. on top of that the terminal was corroded 😮. I bought both batteries at the MB dealer. Pricey but less potential headaches… I am assuming that the battery reset works for both batteries?

@josecitomarin 5 ай бұрын

Thank you so much for your comment. The reset needs to be done on the main only. You can get the batteries elsewhere without any issues. You should get a scanner that does a bit more than that.

@TheBstegold 5 ай бұрын

Thank you

@TheBstegold 5 ай бұрын

Yeah I will get a better scanner after this repair… parts are a little pricey etc. this scanner charges separately for each reset.

@josecitomarin 5 ай бұрын

@@TheBstegold Did you see the video on the main battery change? I used a different battery and it works great, it a very good battery.

@udaynj Жыл бұрын

One question - why didn't you disconnect the main battery before replacing this? I feel that would have made it a lot safer.

@josecitomarin Жыл бұрын

Thank you so much for your comment. If it makes you feel safer you should disconnect it. But as long as you take the necessary precautions you will be fine.

@victorvillaran5763 Жыл бұрын

José , donde puedo comprar auxiliary battery , me acaba de salir el error de la batería. Gracias

@josecitomarin Жыл бұрын

Que tal Víctor. Dale click al enlace que tengo ahí. La compañía es FCP Euro.

@P7BOLO 7 ай бұрын

Ive got alot of fault codes after i changed the auxiliary battery , i even did star diagnose original mercedes and made the big battery adapt “0” but it was a quick fix, any idea whats the issue ?

@josecitomarin 7 ай бұрын

Are the codes related to the auxiliary battery? You probably left something loose. Go back through the procedure to see that everything is connected.

@P7BOLO 7 ай бұрын

@@josecitomarin Thanks for the anwser , it came out the main battery was drained.

@josecitomarin 7 ай бұрын

@@P7BOLO no problem. Glad you found the problem

@patricklee7888 Жыл бұрын

People online have said to replace both batteries since my car sometimes doesn't go in gear (we start it up, can't go into reverse or drive unless we restart). Does that sound right to you? I believe the main battery was changed 3 years ago but unsure about aux battery.

@josecitomarin Жыл бұрын

Thank you so much for your comment. If your main battery is 3 years old and from what I get your auxiliary battery is even older, I would change both regardless of what is happening. Now, your transmission having issues may have a lot to do with the transmission service. When was was the transmission service done? The transmission is completely electronic, so restarting the car is making the transmission restart. Take a look at my transmission service video

@patricklee7888 Жыл бұрын

@@josecitomarin will do! We had the Mercedes maintenance plan so we followed everything to the dot

@josecitomarin Жыл бұрын

@@patricklee7888 great. You have to do the maintenance in the car. It’s the only way it will last long. The transmission service should be done every 60K

@pweb4941 Жыл бұрын

what are the functions of the aux battery? I have a 2014 w222 . Today i have a car with zero electrics. Door locks, command system non responsive. Is this the aux or main battery that needs replacement?

@josecitomarin Жыл бұрын

Hi. Thank you so much for your comment. The auxiliary battery will show a warning in the dash. The auxiliary battery control some electronics not all. It’s kind of a back up for the main battery. If your problem is in fact a battery issue, it would be the main battery. I would start there and depending on how old the auxiliary battery is, if you can just replace both while you are at it. I did both so I don’t have to deal with that later, that way I know how long my batteries have really been in the car. Make sure to check out the video on replacing the main battery and don’t forget to register the main battery. You do that with a xentry scanner. If you are in the NJ area in the USA I can help you with that. Here is the link to the main battery replacement. kzfaq.info/get/bejne/nrZxe6V9trzJl5c.html

@ilhommuminov708 10 ай бұрын

@@josecitomarinwhat part of NJ Sr I’m by Bay ridge Brooklyn NY

@josecitomarin 10 ай бұрын

@@ilhommuminov708 I’m in south orange

@ilhommuminov708 10 ай бұрын

Cool I need to get done a lot of work as you did but mine got 18.000 mile on it but still I’m scared after watching your videos I will start with my battery 1st I believe cuz most of the Time the car parked thanks that’s not far we could meet up sometime

@josecitomarin 10 ай бұрын

@@ilhommuminov708 of course

@user-qr8kr4by2y Жыл бұрын

Are you supposed to code or register the new battery with a scan tool?

@josecitomarin Жыл бұрын

Not the auxiliary battery. Just the main battery.

@user-qr8kr4by2y Жыл бұрын

@@josecitomarin nice I appreciate you content very good step by step instructions.

@josecitomarin Жыл бұрын

@@user-qr8kr4by2y thank you so much

@mag_nee_toe651 Жыл бұрын

Where did you get battery?

@josecitomarin Жыл бұрын

FCP Euro

@mag_nee_toe651 Жыл бұрын

@@josecitomarin thank you

@josecitomarin Жыл бұрын

@@mag_nee_toe651 you are welcome

@quegosenove9432 Жыл бұрын

😎✌️

@carycoller3140 7 ай бұрын

This battery must be why my start-stop isn't working. If I have to go through all this to change it I'll continue to live without start-stop.

@josecitomarin 7 ай бұрын

Thank you so much for your comment. In my case it was the main battery, so you have to make sure because you don’t want to stay stuck without the main battery. If your main battery is over 2 years old and it’s Mercedes, it’s out of warranty. At FCPEuro parts are lifetime warranty

@carycoller3140 7 ай бұрын

@josecitomarin In my Range Rover the aux battery is definitely for start-stop. I bought my S550 about a month ago and the only thing that doesn't work is the start-stop, so I figured the aux battery is why. That's when I found your video. I'm going to change both of them just to be sure since I don't know how old either of them are. Better safe than sorry. Benz is probably gonna screw me big time on the price, but we don't have good independent shops in my city. It needs to be done though. Luxury car life issues, you know!

@josecitomarin 7 ай бұрын

@@carycoller3140 try to do it your self. If the main battery is going bad, the car’s computer knows that it will not turn automatically back on so it won’t stop to start again. It could also be the auxiliary because that is one of the parts it powers, but in some cases it’s not. The batteries should have the dates on them.

@carycoller3140 7 ай бұрын

@@josecitomarin But, if it's the main battery, I don't have the equipment to code the battery to the car computer. Also, where would I get the proper aux battery to avoid buying the one MB sells? Can I get just any battery that's that size?

@josecitomarin 7 ай бұрын

@@carycoller3140 where are you located?

@ahmedkamalalkamali6929 7 ай бұрын

BMW & Mercedes Benz finished no more , it becomes grabbed a cheep collections from Swedish Dacia and the rest fabrications from Taiwan n Chaina with cheep silly design , no more expert designer in MB or BMW as all them been terminated.. The last quality MB was W210 & w211

@josecitomarin 7 ай бұрын

Thank you so much for your comment. Those were beautiful models. Maybe the quality of cars is not as good anymore, but as long as you treat them good, they will last a very long time. If they use better materials on cars and keep building them in big cities and countries like they used to, cars would be even more expensive. So, the way I see it, it’s kind of a compromise. There is of course the planned obsolescence. No manufacture of any product anywhere want their products to last forever.