I think you are assuming that to reset the check engine light you can just disconnect the battery. Disconnecting the battery on a 2004 OBD2 compliant vehicle will not reset the check engine light. It must be reset with an OBD2 scan tool. This would work on OBD1 vehicle but not on OBD2 vehicles. So the radio issue is mute. Have the problem that set the check engine light repaired and then reset the light with the tool. Reset the light without correcting the problem and the light will just come back on.
who is the comedian on blue collar who says check engine light off in his act
Check the fuses.
Check fuses
Check the wiring for the radio using a spark tester. Also check the DOME fuses for the interior light. The spark test will say whether or not the fuse is getting current, if no power check the radio unit.
Check all the fuses first, if they're fine,For the radio(if it's in fact the whole radio and not just the head unit light); check the fuse on the back of the radio if it has one, check for current from Battery+ wire leading to radio, or ground. if those check out fine, the radio itself is most likely dead, if nothing had power it could be a relay on the printed circuit board(don't touch this with your fingers), have a technician diagnose this.For the dome light; check current to the switch, if it checks out fine move to the light itself, if it checks out fine replace the bulb, if there is no power at all it could be a relay, or a B+ wire is shorted out, or the ground isn't good.
first you want to find out why the check engine is on then go from there . if you have an auto zone thay will check it for free good luck
remove backup/radio fuse under hood
who is the comedian on blue collar who says check engine light off in his act
I turned off h radio and engine. Turned the engine back on and it was gone,
Disconnect the battery for 5 minutes get the radio code before doing this
Have vehicle scanned to see if any codes are present
Sounds like some kind of intermittent electrical short
pull the 7.5 fuse out in box under bonnet for 10 secs, you will loose all radio settings
Check the fuses.
Liberty Radio was created on 1995-07-03.
= Service Engine Soon flashing light and Trac Off light on =
yes, and what codes are you asking about "check engine" or anti lock radio codes?