Hi my dashboard and gear shift lights doesn't work when i have my lights in auto.

It looks like it may be bulbs that just need changing.

https://www.google.com/search?q=2005+Toyota+Hiace.+My+gear+shift+indicator+light+doesn%27t+come+on

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Have you installed a radio, trailer lights, or did something with the wiring? If you did you probably ran a hot wire into the grounding and caused the fuse to blow. If you haven't messed with the wiring you probably still have a blown fuse. Pull the fuses out and hold them up towards the light and see if the thin wire inside the plastic fuse is burned in two.

I had the same problem. these trailblazer are a pain. There is a cable that runs underneath the vehicle, and that is probably the problem. The cable is broke.

Could be a fuse. Check the interior firewall fuse box under the driver's side dashboard area. That's location of the fuse box. Probably wired in series....maybe wrong bulb replaced.

Find a friend who knows wiring of automotive very well-you may have loose or melted wiring under your dashboard.........

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Before you do that turn on your hazard flashers then off again a couple of times some times dirt gets around this switch and causes lights not to work.

IF the check engine light is on, codes are stored. Getting the codes read is ALWAYS the first step

1st Suggeston mke sure youare pressing brake pedal while trying to shift gears.
2nd Suggestion if this doesn't work check your neutral safety switch on transmision .
Good Luck!!!

hold is used to hold the gears longer in an auto like sports shift mode on newer cars, it should come on and then switch off at start up unless you have it engaged, if its continuingly blinking you have an issue with your gearbox as the auto box will run its own little self diagnostic on start up

It is the prnd indicator switch on the shift shaft of the transmission,or a shift solenoid,or the valves are sticking in the valve body,try some lube guard,added to the transmission,it is great for stuck valves.