Hello, everyone, I'm going to show you today on ML500 W164 or x164 if your gear doesn't
shift all of sudden they die on you what is the problem that can cause it not to work
it so basically not a transmission issue but your gearbox has an issue that your gears
won't shift and the car doesn't come out of park and I can show you in a display panel
how does it shows as you see on my display panel my Car is started and if I press the
gear
you can hear that little noise so what happens that regardless you go up and down if you
see that it's still showing on the display panel it's on a park is not moving up and
down so basically it's dead and what causes the problem this is the problem, this is the
huge battery this is the secondary battery which holds the secret this is the 12-volt
battery and this is the original genuine Mercedes battery and this is one of the secondary
battery what we have on this a car which it totally strictly is dedicated to your gearbox
system and which shifts the gears so I'm going to show you how we're going to fix this issue
...
once the Mercedes mechanic determine the root cause and he came up with that ISM module
has been gone bad which is called the intelligent servo module in other words intelligent service
module and it's not that hard to replace ourself we can do DIY ourself but the problem do comes,
it does arise wants you to replace the module then the car needs to be reprogrammed again
and since I did not have any access myself to the software so I did end up with a mechanic
and I asked him to replace it so this is the module which is a genuine Mercedes part he
replaced it and let me show you on another side of the module how it looks and it's a really
straightforward it right under the transmission goes are close to that it bolted with these
are four places and other than that this is another connector which are plugs in what
like a solenoid now so this is the module is replaced and after replacing the car started
functioning right away so only one thing I wanted to share since I've been through this
experience I want you guys to understand that when you jump-start your vehicle never leave
the car key inside your ignition always take the key off put the JumpStart cables then
come to your car then put the key in and start the car then take it out again once it's started
then you can remove it no problem but any fluctuation during that current and then the
key has inside the ignition that means your engine service everything is working running
so just a tip so thank you for joining to Easy Steps if you found this to be helpful
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