Quote:
Originally Posted by Phalcon51
Didn't see anything in the owner's manual in the section on replacing the battery. Not sure, but I think it's a W211 I've got, right? If I need to do that is it just a matter of cycling the various items through their full travel? Does the computer give you any prompts on the Nav screen? Does the 06 have an adaptive system that needs to relearn how I drive?
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You do indeed have a 211. And you do have an adaptive system, but that is no issue anyway; it doesn't reset from a simple battery disconnect. The windows, sunroof and steering angle sensor are the biggies (you get malfunctions on startup after the battery disconnect, turn the wheel lock-to-lock a couple of times and then shut down, on restart those should clear).
The concerns about residual voltage in the system are why I'd prefer the battery disconnect (and be sure the key is in your pocket, never connect or disconnect the battery with the key in the slot). If you then step on the brake pedal (before doing anything else) for half a minute, that will discharge any stored energy.
The disconnect will reset the ECU for trouble codes and several emission systems will not be in the ready state for a period of time afterward, so if you're close to an emissions test you don't want to do this right now.