No, there is no on/off switch.
click the play/pause and hold, repeat to switch off
OFF OFFOFF OFFOFF ONOFF ONOFF OFFOFF ONONON ONSee related link for screenshots.
OFF OFFOFF OFFOFF ONOFF ONOFF OFFOFF ONONON ONSee related link for screenshots.
Open up your amp and see if there is loose wiring on your on/off switch. If so, you can take a soldering iron and fix it. If that doesn't work, or that's not the problem, then you can take it in to a guitar shop for a replacement switch, which will only cost you around $10.
OFF OFFOFF OFFOFF ONOFF ONOFF OFFOFF ONONON ONSee related link for screenshots.
Run a fused HOT line from the fuse block to the switch under dash - the other end to the cooling fan
location of fuel pump on/off switch on fo r d ANSWER The fuel pump inertia switch is in the right front passenger area , it is below the dash but above the carpet in the right hand corner
On fire wall or on heater plenum there should be a relay, also the GEM a brain that controls many functions may be bad
I have the same problem - I was recommended a brake fluid drain and brake fluid sensor replacement - haven't done it yet, but hopefully it works. Dealer quoted me $190.
Incorrect refrigerant charge?
You might want to consider just replacing the stereo. If you have a special attachment to the stock unit, maybe you can find a used unit somewhere. You'll probably have a hard time getting just the knob somewhere.
Get it serviced. Depending on the model there could be several different causes for your problems.