MERCEDES AUX BATTERY TEST

Check out my website if you really want to be a good diagnostician. Anybody can change parts, not everyone can diagnose.
www.a1diagnostictraining.com
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[@saileshthapa9302]

Very informative one,keep up the good work !

[@sefofatai6618]

great tutorial and very specific. im subscribing and gonna checkout the website and donate for the good job. thank you A1

[@a1mechanicaloakey639]

I appreciate that so much. It will go back to the project and improve quality.

[@wellingtonchanda860]

Hey, I've changed the auxiliary battery but I still have the same error.
((Component 'G1/7 (Auxiliary battery)' is faulty or not
installed))
Any help

[@GendooDad]

Thanks for making and posting this video. It is very informative. Can you tell which scan tool you are using? Looks like Autel, but can't tell which model

[@a1mechanicaloakey639]

Autel ultra Larry

[@GendooDad]

@@a1mechanicaloakey639 Thank you! That looks like a fantastic device, however for a hobbyist such as myself, do you have any recommendations for a lesser priced unit? I do like the bi-directional aspects, and the way you were able to command modules and relays to turn on and off. I mostly have Mercedes products, but a multicar feature would be nice.. thanks for you time.

[@a1mechanicaloakey639]

Launch diagun x431 and autel 808, 908 are budget but professional level tools

[@GendooDad]

@@a1mechanicaloakey639 Thank you so much!

[@sefofatai6618]

“Low Battery Convenience Function Temporarily Unavailable.” Both batteries tested good & voltage at 12v. No fault codes at Batt Control Module. Do I have a BCM that is not seeing that everything is working properly? Even though I can communicate with it?
I will donate more. Thank you

[@a1mechanicaloakey639]

I would check both battery properly, check charging voltage on both battery. Also if it's intermittent, possible the relay for secondary battery could be playing up sometimes. I have had that issue before. It's on the video where and how to check it. It's a 3 wire relay BMW special. But you could wire a normal relay as long as it's high voltage/current.

[@sunithabinoy7996]

I have a same battery light on in cluster problem a/c blower not running speed some time it working fast few seconds