Hello everyone i am a new member her i just recently purchased a 1999 lexus ls 400 and on the dash it shows tail lamp failure but all my bulbs are working any ideas or even a way to totally bypass it and make the light go away ... please help

 

i already replaced a few bulbs and also swapped the tail lamp failure module in trunk still light is on

 

is the 3rd brake light working? there are 2 bulbs in there.

 

Inspect each bulb for a loose filament and each bulb socket for corrosion and that the bulb fits tightly against the contacts. Inspect the connectors for each of the four rear light modules. If the bulbs are blackened from age, consider replacing all the rear bulbs. Other possibilities are a bad or corroded ground wire in the trunk. Be patient and you will find the problem.

 

Most likely 3rd brake light behind rear window. Even if it works change it because the resistance changes with time. Already happened to me on 3 different toyotas

 

trunk harness.

 

I tested one 98 LS on the lot, same problem. The guy told me he replaced all the tail light and still there is an error msg on the dash. The error shows up right after I press the brake. Maybe the 3rd brake light?

 

yes my issue is also after i hit brake... i will check third brake light tomorrow and let you guys know... thank you

 

Don't just check the third brake light change it even if it works

 

if u have the wrong bulb in the 3rd brake light it will still come on the dash as not working

 

sam you are a life saver ... thank you... third brake light worked but i changed the bulbs anyway and just as you said it solved it no more annoying message reading tail lamp failure.... and to think i was going to take it to lexus to have them check... that would have been a hefty bill

 

so where did you get those light? just a regular auto store? or dealer

 

I don't know about orang but I just use ones from local autoparts store or walmart

 

yeah i just bought regular bulbs at wal-mart... thanks again sam

 

Ha! Now I can fix my mysterious tail lamp failure. The search do work great! thanks all.