Lexus Troubleshooting Questions? Ask a Lexus Expert
it is likely that a "wrong" bulb was installed.
There are MANY automotive bulbs....they are all a little different, some bulbs have the SAME connector/fitting and will fit in many different cars but have different #'s because they have a different power rating....does that make sense? So for example lets say you have 2 brake bulbs- they BOTH power up and work in the same socket but one has a 1 amp rating but the other one has a 3 amp rating- this causes a indicator light to come on because 1 bulb is different. Make sense? So yes the bulb will work but it will also register a failure in the controller.
Yes it "resets" every time you remove the key from the ignition. To test to see if the problem is "fixed" you have to cycle the key and retest, you cannot just plug in different bulbs while watching the failure indicator. In other words let's say I have a blown bulb....I have the car on and the indicator is on....I replace the bulb while the car is on the new bulb works....the indicator will remain ON until I cycle the key.....I cycle the key and the system rechecks and now the indicator is off. Good?
19 May 20
is there anything else i can do for you>?
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