Oil light in dash is constantly turn in on.! I already change de especifil type of oil, filters, and air filter and still have the problem.

Turn the ignition key to 'ON' and press the odometer button until the display reads ODO (not Trip A or B).
Turn the ignition key to OFF.
Hold in the same button you used in step 1.
While holding the button in, turn the ignition key to ON.
The ODOMETER will change to:
5 dashes - - - - -
Then 4 dashes - - - -
Then 3 dashes - - -
Then 2 dashes - -
Then 1 dash -
THEN all zeros 0 0 0 0 0
Then back to the correct mileage.
Then the Maintenance Required light should blink and go out.

sounds like your pump is failing, or it could be the sending unit giving a bad reading. Has nothing to do with having changed the oil .

Check oil pressure with a gauge. The sender is electronic and could be the issue. Also oil filter could have a bad check valve. Change the oil filter, oil and sender. If the problem is still there you have worn engine bearings and major issues are coming your way.

I do not know year, mileage.Tune up,coils, wires.I had problem for last three mouths ,last night found the problem,change spark plugs,fuel filter,change coils and module still problem,Bad wire #3,now is fine.

Is it constant or just when running? it could be a rat if its constant and if its when running it could be the plastic dash bord material rubbing agenst each other

Sounds like the low oil level light. If the oil is full, it sounds like the level sensor is bad.

This is telling you you need to change the oil right,You need to change the oil filter air filter spark plugs and plug wires.It just needs a good service.

You have to reset it by holding the button on the dash that looks like odometer reset button then turn key on while holding that button that will reset that light.

the service interval "light " has nothing to do with emissions or a problem with the car . There is a rectangle slot on the dash cluster you just use your key and press it and it just resets the counter

The oil filter is no longer a "spin-on" type filter. Toyota has changed to the "cartridge" type filters that are in a cylindrical housing on the engine. You need to remove the filter housing to access the cartridge. Make sure that you replace the o-rings that come out with the cartridge filter with the new ones supplied in the new filter box. To reset the light, follow these directions:

Turn the key ON, do not start the engine.

Look at the odometer, and verify that it displays "TRIP A". If it is on "ODO" or "Trip B", press the black stick next to the odometer to read "TRIP A".

Turn the key OFF.

Press in, and HOLD the black trip meter reset button, hold it IN.
DO not release it.

Turn the key ON, do not start the engine

Observe the Odometer display. You will see 5 dashes, then 4, then 3, then 2, then 1 dash, and finally, 5 zeros. Then, whatever number that was displayed on "TRIP A" will be re-displayed..

Now release the black trip meter reset stick.

This completes the reset procedure, and it will be back on in 5,000 miles, to remind you of you next oil change.