How to replace Auxiliary battery on a Mercedes S550 (w221).
In this video you will learn how to replace the auxiliary battery on a S550 (w221). The same method can be applied on (W221) years ranging from 2007- 2013.
Supplies required:
-Auxiliary battery
-T-25
-T-20
-10mm
-flashlight
-flat screwdriver/pry tool
Пікірлер: 27
Great video. Detailed and informative. Thank you sir!
@meetbhuller6324
16 күн бұрын
Hi bro, I apologize for the late response here. Glad to hear you found this video resourceful. Not a problem, thank you🙂.
Great help! Appreciated. I got similar problem in my 2012 SLK350. Mine has no fuse panel, but same location. Very detailed instructions!
@meetbhuller6324
6 ай бұрын
Thank you. I am glad to hear you found this video helpful. Also, thank you for sharing that the 2012 SLK does not have the fuse panel there. I just learned something new from you! This might be knowledge for others as well 🙂
I have the exact same message and I was thinking I need to replace the trunk battery. Thanks a lot, this video was right on time ✌🏽
@meetbhuller6324
Жыл бұрын
not a problem brotha🙏! Glad you were able to find this video! Yup if you are seeing this message on the dash, then switch the auxiliary battery from the video and that solves it.
Thank you very much! great video! Alex😀
@meetbhuller6324
6 ай бұрын
Thank you so much! I’m glad you liked the video 😊.
I like the way your demonstration Exlent job my friend For replacing MB S550 W221 auxiliary battery is quiet harder then mine W211 E240 W211 auxiliary battery located at the end of engine room passenger side , I think it is filled with AGM/GEL acid to reduce corrosion build up..
@meetbhuller6324
6 ай бұрын
Hi, thank you, I am glad to hear you liked how the steps in the video were demonstrated. Yes it seems that on some models the auxillary battery location is harder to get too versus on some its much easier. Thank you for sharing that comment. Happy New Year!.
What were some of the issues you were having before you replaced the auxiliary battery? Mine is the Radio isnt working and if I dont start the car everyday seems to drain my main batteries, also auxiliary battery fault shows on dash. Hopefully changing that will fix some of my issues thx.
@MrFarmer83
3 ай бұрын
Update switch auxiliary battery but fix issue. Benz are difficult
Its much more accessible in a w207 e550a trunk.
@meetbhuller6324
10 ай бұрын
Yea the trunk definitely would be more easily accessible vs under the steering column. Thanks for sharing with me!
Do I have to disconnect the main battery to do this please let me know thank you
@meetbhuller6324
11 ай бұрын
No you do not need to disconnect the main battery.
What is it good for?
@meetbhuller6324
Жыл бұрын
@korootiAd The auxiliary battery controls the functioning of the inside electronics in the car. Meaning, entertainment, dash, etc. Also, in the S class W221 Mercedes, since the gear selector(P,R,N,D) is a electronic gear selector, if the auxiliary battery fails, it can cause you not to be able to switch gears from the small gear selector that is on the steering wheel column. It depends on the model of the car, but mainly to answer your question, it controls a lot of the electronic stuff in the car. It is the secondary battery in the car. Hope that answers your question.
Not in a 2007 W221.
When does this go out
@meetbhuller6324
11 ай бұрын
According to the Mercedes Benz website, On average, auxiliary batteries have a service life of up to seven years, more or less depending on usage and driving conditions.
I replaced mine, still shows the warning on the dash
@meetbhuller6324
Жыл бұрын
The auxiliary battery you replaced with, was it from Mercedes Benz dealer or after market? After replacing, have you driven the car for some time? I know sometimes it can take some driving to reset the computer and for it to pick up that it’s been replaced.
@JohnDoe-zg8jm
Жыл бұрын
@@meetbhuller6324 thank you for your reply. It's an aftermarket battery that had great reviews as far as a replacement for Mercedes. I've put about 400 miles since then.
@meetbhuller6324
Жыл бұрын
@@JohnDoe-zg8jm Apologizes for getting back late here. Were you able to get the issue fixed?
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
@meetbhuller6324
6 ай бұрын
Hi, Sorry for the late response here.I totally agree with what you said. I feel like the older Mercedes were built with quality and for lasting. The more the newer ones, its more plastic and the quality on them just keeps going down. I agree the W210 and w2I 11 was made with quality. Thanks for sharing your thoughts!