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Eric, Automotive Repair Shop Manager
Category: Toyota
Satisfied Customers: 32082
Experience:  20+ yrs. experience as repair shop manager and technician.
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A little side tail light stays on on 06 4runner

Customer Question

a little side tail light stays on on 06 4runner
Submitted: 1 year ago.
Category: Toyota
Expert:  Eric replied 1 year ago.


I am sorry that you have not been helped yet. I just came online and saw your question

So does the light stay on with the key in ignition and lights off, or does it also stay on with key out of ignition?

Also, I need to know whether it has aftermarket trailer wiring harness connected in case this is an issue, and I need the 17 digit vin number

Customer: replied 1 year ago.
VIN JTEBU14R368059562
Yes. light stays on ALL the time with or without key. With or without lights on. Trailer harness is factory equipt.
Expert:  Eric replied 1 year ago.


Ok, in the junction block under driver side of the dash is the taillamp relay. Near it is the horn relay. Swap them out and see if the light goes out. If it does, replace the relay. See attached for location.

If no difference, then this is likely a faulty body ecu but will need it verified with a scan tool

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