All the lights in the radio have been flickering for two weeks. Now are out. All other dash lights ok.
Took radio out and removed front plate. It appears that every button on the radio pane is lit with an individual LED. Since all are out, maybe there is a fuse or central light controller.
I am not a skilled electrictonic technician so this is as far as I can go.
Is my best option finding a replacement at a salvage yard?
FIXED MINE! My 2000 Sienna XLE had the same problem with the lights not working. They would flicker on once in a while. I took off the face plate, cleaned the radio with a "can of air" to remove any dust, put electrical grease on the face plate contacts and the plugs on the back of the radio. Reassembled and the lights worked better, but dim and flickered off a bit. Knocked on it a few times on the side to get those contacts to work better and it is now working. My guess is the contacts on the faceplate were not making good contact. If I had to do it again, I would pull on and off the face plate a few times after installing the electrical grease to help loosen up any corrosion for a better connection. That would probably eliminate the need to beat on the side of the radio after reassembling. This fixed mine. Hope it works for you.
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#1 Check your ground or corrosion at battery terminals if OK try adding an additional ground strap or cable to body of vehicle make sure you clean surface that means remove paint where cable is grounded.
#2 If you have an aftermarket radio or sound system or anything aftermarket that is not original check that also.
Very important if terminals are not corroded splice both batt cables about 1" back and inspect under insulator for corrosion if there is any replace batt cables
unscrew dash plate around radio use a magnetic screw driver because the screws are in the two front vents once thes removed the dash radio plate should pop off without force exposing radio behind unscrew that unplug wires pull rest the way out
now the advice
make sure if your replacing with aftermarket make sure your wire leads are connected correctly no splicing of main wires in dash thats nono trouble as wires now have multifunctions to them it should be simple as plug and play
Best place to start is the positive lead on the battery . Remove the lead and clean battery pole and terminal using sand paper until you have shiny syrfaces. Replace the lead and tighten the terminal . Check the battery for charge condition as what you describe indicates a flat battery
How to change the Instrument Panel (Dash) lights in a 2001 Toyota Sienna.
Note! You should disconnect the Negative battery terminal before you
start. If you do it will be a few trips before the engine runs and
shifts normally. All electrical plugs have a catch. You have to find the
correct place to push in, before they will come apart. All of the
screws are #2 Phillips.
Remove the two vertical screws in the trim panel above the cluster.
Grab the bottom of the trim and pull strait back. Note, the center AC vent comes with it.
Un-plug the wires and set it aside.
Use a thin plastic putty knife to get under the left and right
edges of the square Radio trim. Pry it strait out and let it hang from
Above the radio face there are two screws that go strait up into the big piece of trim around the cluster. Take them out.
There is another vertical screw on the left side below the dimmer. Remove it too.
Look strait at the dash for the heads of two obvious Phillips head screws. Remove them.
Pull the top of the big tunnel towards you. If you got all of
the screws it should roll towards you until it is stopped by the wiring.
Unplug everything. If you have an alarm the plugs may be in a
ball of foam tape and cause you fits. Scrape off the tape. You may have
to lower the knee bolster, under the dash, to get to the plugs There
are little catches to find and push.
You now have easy access to the cluster. Take out the 4 screws and roll it towards you.
The panel lights are the 4 biggest sockets. The bulbs are 194s.
Plug the dimmer back in, hook up the battery, turn on the
lights and check the bulbs. Mine all worked after I fiddled with them. I
replaced all four anyway.
Remove the green covers carefully. The auto parts store won't have them.
When you put it back together don't forget the light for the
ignition switch. You may not have noticed it unplug when you took the
big piece off.
This fix works for 2.7L engine. Worth having your mechanic look at.
Answer NO: 08-36-99 SUBJECT: Engine Oil Pressure Light Flicker DATE: Oct. 15, 1999 OVERVIEW: This bulletin involves adding a terminal/wire/vent to the oil pressure switch connector.
NOTE: THIS BULLETIN APPLIES TO VEHICLES EQUIPPED WITH A 2.7L ENGINE.
SYMPTOM/CONDITION: With a hot engine the oil pressure light may be on or flicker on at idle.
DIAGNOSIS: Verify engine oil pressure as described on page 9-21 of the 1999 Concorde/Intrepid/LHS/300M service manual (Publication No. 81-270-9140). If engine oil pressure is within specification perform the Repair Procedure.
PARTS REQUIRED: Qty Part No. Description 1 05017800AA Wire Terminal/Vent
REPAIR PROCEDURE: Raise vehicle on a suitable hoist. Remove engine oil pressure switch connector from switch. Remove sealing dart from the empty cavity at the rear of the connector. Pull terminal locking ring outward from front (switch) side of connector to gain access to terminal locking tabs. Install wire terminal/vent, p/n 05017800AA, in place of the removed sealing dart. Slide locking ring back into place. Attach the connector back on the oil pressure switch. Spot tape the wire/vent to follow the harness towards the top of the engine compartment.