I cna't get maintence required light to go off and the ac compressor wont come on

the evaporator is the ac cooling part that is in the dash.if it starts to leak the only solution is to replace the evaporator. this requires dash removal. adding any sealer will ultimately cause problems with compressor valves and expansion/orfice tubes. [ don't do it...]

ac compressors are controlled by relays , switches , high and low pressure switches and fuses
replacing the ac compressor will require the gas charge to be administered as too little or too much will affect the high/low pressure switches
have it inspected by an accredited ac specialist shop for a proper diagnosis and a quote

Hi Ravi,

yes when you connected the + wire to battery it wont turn off by using ac switch.
please un do the thing you done.
i think the problem is your system is out of gas or gas pressure drops required level.or bad timer relay unit .
the system has pressure cut out and if you are out of gas it shuts down the compressor and it is safty for compressor too.

regards,
nuwan

This just happened to me yesterday. First, push the AC button to turn the AC off. Then, find the fuse pannel on the driver's side under the dash. Mine is behind the ash tray. Replace the 10 amp fuse (marked fuse #18 on my 1995 Camry manual) and the windows, spedo, tach, etc will come back on. My problem is the bearings on my AC clutch heated up a plastic piece between the AC clutch and AC compressor and the plastic piece blew up and sprayed hot plastic all around the AC compressor. The car runs, but no AC and if I push the AC button, the fuse blows again. I am planning to unbolt the compressor from the engine block, and replace the clutch assembly and pully without disconnecting the hoses. Disconnecting the hoses will vent coolant to the atmosphere and require professional equipment to clean the oil from the system, pull a vaccuum and recharge the system. The AC compressor clutch assembly is available at Advanced Auto for $98. The whole compressor is $247 but requires a lot of work to recharge. You could also take the clutch assembly or whole compressor off and just leave it off and get a shorter (40" in my case) belt to go just to the alternator.
Good Luck.

the maintence reminder lamp means you are due for oil and filter change.to reset maintence light, turn the ignition switch to the on position engine off.push the reset button on clock control panel for 3 seconds,then turn off ignition switch.then turn back on the ignition switch the maintenance light should be off is so.it has reset.

No...light will soon go out...Now, get out there and buy a can of SeaFoam (AutoZone) and add it to the gas tank with instructions.
Good Luck

It will; always do that on some vehicles, as long as it doesnt stay on for an extended period of time, i wouldnt worry about it so much.

reset: turn ignition on...push odometer button till it displays mileage on car...not trip milage but actual mileage. Turn car off. Open driver's door, press and hold odometer button....turn ignition to on....hold odometer button for 10 seconds....odometer display will show -----,----,---,--,-,0000000....maintenance lights are reset...lights will come on every 7500 miles to remind you to change oil and check fluids etec....

D problem is simply a lightbulb out on the cluster board.
Simple to remove the cluster and replace the bulb.

The Service Required light can be reset by
1) Turn they key to the II position

2) Turn the key to the off position, and push and hold in the odometer reset button

3) Turn they key back to the II position, while still holding the button.

4) After about 10-15 seconds, the light should go off.

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turn the key off, then hold the odometer reset button in, turn key on and keep holding, the light will flash off then on once, keep holding until light stays out, start car and all should be ok