0/d light flashes off and on

Sounds like your transmission has failed.

id give a good look at all the doors (jams) at the switches that control lights , especially the back door ones , on my Camry my young son very often hit with his foot when getting in/out and broke off the switch in the back door (I think it sticks out a bit too far) , if you find one broken or "not looking right " there easy to replace . only one Phillips screw and out they come , unhook plug with wires and connect new one back it goes in same hole ,same way and screw goes back in

SOME VEHICLES CALL FOR YOU TO DRIVE 3 DRIVE CYCLES BEFORE LIGHT GOES OUT,AND YOU MUST OF DONE IT.

take it to a good shop and have the error codes checked. expect to pay anywhere from $0 (free), to $ 50, any charge should be applied to repairs

check the transmission fluid level

sounds like a "bad sensor", goe to advance ,auto zone,kelly, and have them do a "free" code test", and see if it is a code error, if it is, you or someone might have Changed the Battery lately, if so disconnect battery for atleast half an hour, if this does not fix light, try draining trannsmission and replace filter,and fluid, this should correct any {mech} problems,let me know, god bless

h) Engine Oil Replacement Reminder
Light (for vehicles sold in U.S.A.)
This light reminds you when to replace
the engine oil.
This light will come on when the ignition
key is turned to “ON” and will go off after
about a few seconds.
When you drive for about 8000 km (5000
miles) after the engine oil replacement,
this light illuminates for about 3 seconds
and then flashes for about 12 seconds
with the ignition key turned to “ON” position.
If you continue driving without the
engine oil replacement, and if the driving
range exceeds 12000 km (7500 miles), the
light will come on after the ignition key is
turned to “ON” position. The light will remain
on thereafter.
If the light is flashing, we recommend that
you replace the engine oil at an early
opportunity depending on the driving and
road condition. If the light comes on, replace
it as soon as possible.
You need to reset the light after the engine
oil replacement. Reset the light by
following the procedure below:
1. Turn the ignition key to the “OFF” position
with the odometer reading shown.
(For details, see “Odometer and two
trip meters” on page 136 in this Section.)
2. Turn the ignition key to the “ON” position
while holding down the trip meter
reset button.
Hold down the button until the light goes
off. Before the light goes off, it illuminates
for 3 seconds, flashes for 2 seconds and
illuminates for 1 second.
If the system fails to reset, the light will
remain flashing.


I copied this from page 143 of the owners manual for the 2004 4Runner

service the transfur case change the oil

WHEN THE LIGHT IS FLASHING IT MEANS THAT YOU HAVE A MISFIRE. I SUGGEST YOU REPLACE PLUGS AND WIRES. BECAREFUL DRIVING BECAUSE ALTHOUGH UNLIKLY, IT COULD BE MORE SERIOUS AND CAUSE A FIRE