pinoyk20

hi guys! il be changing the battery that i have on my e55 when i disconnect the battery does it have any affect on the electrical on the car? will things reset? if things are to reset what are those things? and what other things should i look out for? i really have to replace the battery that i have on my car its due for repalcement already.....will it have bad effect do i have to bring it to the dealership? thanks!

MR888

It will be fine, it will reset the ECU which is a plus.

ruBENZ

Have your radio code ready. You may also get an ABS/ESP/BAS code when you reconnect; just turn the steering wheel all the way left then right. Also, expect to reset your windows; four seconds in the up position should do the trick. And, yes, your ECU will reset to OEM specs; you will feel the difference. Good luck.

AMS Performance

remember to hook up POSITIVE terminals first... THEN negative when you install the new battery (remove in reverse order).

pinoyk20

thanks guys! how can i remove the abs/esp/bas codes? is it by just turning the steering wheel? oh i forgot to say i have an aftermarket radio already. thanks guys!

AMS Performance

if you have aftermarket, then no problem at all as far as radio code. Just do 2-3 full turns of the steering wheel (lock to lock) left to right and it will automatically turn off.

pinoyk20

thanks sir!

saintz

Make sure the key is out when you disconnect and connect.

Reset the windows, sunroof, and ABS, as described.

http://www.benzworld.org/forums/w210...cronizing.html

pinoyk20

thanks sir! why does the key needs to be out? thanks

saintz

The system is really picky about the ignition when removing or adding power. I think it has to do with the security module that keeps track of what keys are linked to the car.

pinoyk20

does the engine need to be running when doing the lock to lock thing? and also what the step by step system on doing the lock to lock? another is how to reset the window ? what do i have to do to get the window running on the old memory? thanks

nicobaires

they explained here on your post!! scroll up

pinoyk20

sorry but the explanation iis not clear sir. thanks

saintz

Yes

Turn the wheel all the way right, then all the way left, and the lights will go out.

The window will "forget" where the top and bottom are. Meaning auto open and auto close won't work. First take the window all the way down (don't use the one-touch auto-down feature, just hold the button half way). Keep holding the button for 5 seconds. Then take it all the way up (again, push the button only half way, don't use the auto up feature). Keep holding the button for 5 seconds once it's fully up. You'll hear a click. Now the window has "remembered" where the top and bottom are and auto-up/down will work. Repeat for all four windows. For the sunroof, hold it in the up/vent position for 5 seconds.

pinoyk20

thanks! how about the memory on the seats? does it reset?

saintz

I think the seats will forget.

pinoyk20

got my car and evrything is ok! thanks guys!