I need to make sure I am doing this correctly:

1) Remove battery
2) Touch neg to pos for 20 seconds to drain capacitors
3) Reinstall battery

This is it right? Thanks

 

Correct save you need not remove the battery. Just remove the negative cable from the negative terminal on the battery, touch it to the positive terminal for 30 seconds, then reinstall negative cable to battery negative terminal. Drive her for 300 miles in "non-sport" transmission mode.

 

Just curious why would you need to be in non-sport mode for 300 miles? After the 300 miles do you just switch to sports mode and then what?

 

It would be 200 not 300 miles, if it matters.

The 200 miles was a requirement in one or more old TSBs about reflashing the TCM (autobox computer) and when that's done the PCM must also be reflashed. There are learned values (known as "adaptions", occasionally spelled adaptations) in each, for many things but the TSB is about gear box behaviour especially gear changes (the lurch etc). The learned values are non-volatile in the TCM but volatile in the PCM. The idea underlying the 200 miles was to have the relearning end up with good & smooth autobox behaviour. The 200 miles is probably no longer needed, as newer TSBs and TCM/PCM reflash no longer state to do it (and there is a new special relearn process the reflashing dealer must carry out). I think the argument for still doing the 200 miles is that you don't know whether the dealer did do the new proper relearn.

I know of no reason to do the 200 when just doing a "hard reset" (*).

(*) really: clearing the KAM (keep alive memory), which stores the learned values in the PCM

You cannot clear the adaptions in the TCM without a jag-specific OBD tool.

 

What he (jagv8) said goes for me too.