Trying to reset the check engine light on my vehicle and wondering if black or red on the battery needs to be disconnected to reset the electronic system or if both do.
2007-03-01 05:50:07 · 9 answers · asked by Peter P 1 in Cars & Transportation ➔ Maintenance & Repairs
Usually you want to disconnect the Negative (safety) but either side will do. Do this for at minimum 30 mnutes to reset the PCM
2007-03-01 05:55:02 · answer #1 · answered by Uncle Red 6 · 1⤊ 0⤋
Neither. Disconnecting the battery is not the way to reset your check engine light. All that will do is cause your clock and radio to lose it's memory. In a worse case scenario, your security system will think your car is being stolen and shut everything down, and you will be out a tow to the dealer to reset things. Even if the "check engine" light does go off, if the problem that caused it i the first place isn't fixed it will just come back.
Take it to your mechanic.
2007-03-01 05:57:55 · answer #2 · answered by oklatom 7 · 0⤊ 0⤋
Its acceptable to remove the floor first because this can ward off shorting the pink or effective cable out with Ametal wrench. Shorting out a battery is a nasty theory it ought to reason the battery in certain circumstances to blow up on your face. the battery provides off fumes and a spark can set them off fairly. sparkling the interior your black cable. look at it in case you spot truly some black that could no longer reliable. the interior the black cable should be vibrant sparkling as does the pink cable. For some reason the black one is continually a lot worse than pink. you should use a short wire brush and baking soda and water to sparkling the interior and outdoors of the battery cables. continually brush remote from clothing and eyes. donning eye probability-free practices is a reliable theory. And wash hands for quite a couple of minutes after operating round batteries. Any white crystal like residue or white powder is acid and with moisture it is going to eat holes in you and your clothing so continually be careful below the hood.
2016-12-05 02:46:44 · answer #3 · answered by ? 4 · 0⤊ 0⤋
the check engine light is just a way to get you to the dealer more often. Keep close track of your fuel milage and if it is consistent your engine is o.k. go to exxonmobil.com for a very good explanation of engine codes. I usually just put a piece of electrical tape over the offending light or if it is low on the panel lay something in front of it. works every time.
2007-03-01 06:35:09 · answer #4 · answered by bungee 6 · 0⤊ 0⤋
I only had to temporarliy disconnect the negative terminal to reset the computer. If you have to do this process over repeatedly, then have the system checked out.
2007-03-01 05:55:53 · answer #5 · answered by Keith R 2 · 0⤊ 1⤋
Either one, but the negative (ground) is preferable, because you can do some unintentional welding by trying to disconnect the positive first.
2007-03-01 05:56:35 · answer #6 · answered by Ben H 5 · 0⤊ 0⤋
The negative side
2007-03-01 05:57:24 · answer #7 · answered by idaho69442 3 · 0⤊ 0⤋
NEGATIVE (black) terminal. (15-30 minutes)
2007-03-01 06:12:33 · answer #8 · answered by strech 7 · 0⤊ 0⤋
neg - the black one (should be black)
2007-03-01 06:03:23 · answer #9 · answered by steve B 2 · 0⤊ 0⤋