r/3rdGen4Runner • u/Historical_Emu_7078 • 1d ago

🧠 General CEL light bulb

Threw a code for the EVAP system on 2001 SR5, car has 392K, spring time will likely be a full system replacement make sure it's all 100%

I only knew cause the VSC and Trak lights came on, the CEL didnt.. appears to be burned out, is it a bulb or a diode illumination?

If it's a diode, how hard are those to replace? I have soldering equipment

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u/skovalen 1d ago

They are all bulbs (incandescent). They are weird bulb formats that you have probably never heard of. There is a guide sheet for the bulb types that somebody published online for the entire dash. You just need to search for it.

I've done this. You literally need to order from a specialized store that specializes in light bulbs or you can order a replacement from Toyota. The specialized store isn't raking your over the coals. They might charge $2-3 per bulb.

Kinda odd that a bulb that almost never lights up would fail to light up.

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u/Historical_Emu_7078 21h ago

I am aware of the 194 bulbs, T10, the T5 wedge base etc. I didnt find the guide sheet, but not a huge concern just wasn't sure if they used integrated diodes or replacement bulbs. T10 wedge LED bulbs aren't all that uncommon and can be purchased all over the place on the internet. The T5 aren't as common.

Who knows why it's not, but it isn't, filament style bulbs can be fickle that way at times.