Horn just goes off for no reason

Loosen the return line at the rail which goes back to the fuel tank and crank the motor.

look for the starter(up top sitting over transmission) and have someone hit it (not too hard)with a hammer while key is held in the crank position,if car starts you will have to ck connections at starter ,if ok you need another starter,reman starters of any age are never as good as the originals,just not cost effective to buy brand new,too expensive!

Jack up car remove 2 or 3 bolts, undo 3 wires and it comes right out.

remove them ,if its in the way take it out of the way

check exhaust for leaks, also could have weak motor mounts depends on what kind of sound you are having

the electric high pressure fuel pump has most likely failed inside the gas tank

starter solenoid problem.Change.

check the starter and the timing and the timing belt

Two things that I would look at:

1.) The spark plugs should be changed at this mileage

2.) She may be having the beginnings of an Idle Control Valve ("IAC") failure.

The security LED blinking is normal

The horn issue may be a weak battery on the keyless entry remote transmitter

my solution is for all cars and not specifically for a camry.

remove the positive wire of the battery.
remove all the wires attached to the starter.
take note on where you took them off.
remove all the bolts holding the starter.
remove the starter.

do the reverse on installation.
last thing to do is put back the positive wire of the battery.

tnx 4 using fixya,

drcool