My 4 runner rear lights do not work when the headlights on at night,
1. checked fuses
2. checked wiring
3, changed all bulbs
What else could it be.
Your wiring could not have been checked thoroughly. Heres an easy solution. Establish if the earth (-12v) to the bulb holder is stable. If it is then run a new wire from the front park lamps to the rear. That will solve your problem. Remember to cut off the original wire that goes to the rear and insulate it well.
[Information] For a 2002 Toyota Camry, the Daytime
Running Lights (DRL) operate utilizing the High Beams (inner Lamps closer to
the center of the vehicle front) at a reduced power.
[The troubleshooting process:] Review the Owner's Manual and ensure the test
configuration matches the following criteria:
1. According to the 2002 Toyota Camry Owner's Manual (Check your Owners Manual):
"The DRL system will make your headlights come on at a reduced brightness
when:
The light switch s in the "DRL" position.
The ignition is on with the engine running.
The headlight switch is off.
The parking brake is released."
2. Set the Test Conditions according to Step 1 above.
3. Check the headlight bulbs to ensure they are not
burned out. If one burns out, there is a fair chance that the other would have burned
out at the same time. Replace as necessary.
In this case, if the high beams operate, the DRLs should also operate.
4. Test the system, ensuring the step 1 conditions are set. (Engine running, Multi-function
Switch on Turn Signals in "DRL" position, headlight switch off
(repeating what the manual says -- it should be obvious that in the
"DRL" position, the headlight switch should be off / do not have the
switch positioned to "High Beam"), and the Parking Brake
"off").
5. If DRL lights do not work, check the engine compartment Fuse and Relay Box.
there is a 5 Amp DRL fuse -- replace it with the spare. Test (step 4).
6. If it does not work, swap around or replace relays -- there are three (3).
Any one of them could be bad (stuck or burned out). Test (step 4).
7. Other less likely possible issues
could be that the Multi-function Switch is broken or a connection / wire is
broken. [Beyond the scope of this
process.]
My problem was that the test configuration did not have
the engine running and parking brake off - Step 1. Problem solved with much
thought, repetitive tests on the vehicle and going back to the basics -- what
does the Owner's Manual say and where are the applicable fuses and relays
located?
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Also own a '94 4Runner.
I hooked up my trailer to the wiring harness not knowing that some kids had broken out the trailer lights exposing the broken bulb elements. I wonder if this shorted something. But now my rear lights and dash panel lights do not work. Brake and reverse lights work ok. I've replaced the bulbs. I've looked for a blown fuse but can not find one specifically labeled for "rear lights" or "dash panel". All fuses appear to be ok.
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