[Captain Mark]

Hi guys,

I've done a lot of searching over the internet and this site in an effort to find out how to properly reset the memory on my '97 Sonata. It's a manual, Japanese import (I'm in Australia). I've tried disconnecting the battery for a few minutes, but I'm not sure this has worked. I'm basically trying to wipe error codes from the system to make sure the new sensor I've put in is working correctly (or if it's another problem entirely). But I can't be sure unless I wipe the memory properly.

Can anyone help me out with this?
Cheers,
Mark

 

[Jed118]

you gotta unplug it longer than a few minutes. My escort was 15 minutes, and the stellar I think was 2 hrs. It had to re-learn idling after that... also my sentra was like, 5 min.

 

[Captain Mark]

Cheers for that. I might just disconnect it before work tomorrow, and then reconnect it when I get home. Hopefully that'll do the trick!

 

[ftwvampftw]

hit the brake a few times to get rid of any static electricity left in it. 15 mins is plenty of time.

 

[Jed118]

yeah those damn capacitors can old a charge. have the key in "on" if anything... let EVERYTHING drain. CMOS's don't need a lot of current to keep alive... 100 mA will keep it alive.

 

[Captain Mark]

Well I'm still getting the "check engine" light after leaving the battery disconnected for 36 hours. Hmmm... I didn't hit the brake or leave the ignition on, but I tend to think 36 hours is enough to drain the system. I can only assume the second hand pressure/temp sensor I installed was as broken as the original one. Or, the auto-electricians who told me the sensor was stuffed were wrong - which is probably the case given what I know of them now.

I think it's time to buy a manual to find out how to check the error codes myself.
As a side note, does anyone know how to do that on a Sonata?

Thanks for the help so far guys, it's much appreciated.
Mark