2008 tundra all dash lights on flashing

My 2008 tundra has all the dash lights on
4 wd hi and low are alternating flashing
A/c flashes and doesnt work. Speedometer is not working! Any ideas what is going on?

 

Did this just happen spontaneously when you tried to start the truck?

Maybe it’s your battery?

 

Electrical for sure... you may want to borrow an OBD2 reader and scan. Has any work been done?? full disclosure some people hide work as to not be ridiculed, but often times something was unplugged while the battery was plugged in or something has failed spectacularly for this to happen.... you need help, we need details, no shame in hiding and it easier to figure out instead of searching in the dark.

 

if you haven't had this work done it probably a good time to do it. take it to a dealer and tell them about the lights and your truck goes into 'safe mode'. they'll do it. free for you, $$$ for them and im pretty sure it'll fix your issue. EDIT: i see you have an 08' might be outside the warranty. worth checking out though bc it wont go away and will only get worse.

https://tundraheadquarters.com/toyota-warranties-air-injection-pump/

 

I changed my spark plugs a year or so ago and forgot to attach one wire to its coil. When I started it up a bunch of dash lights lit up. Lost my 4wheel drive too, (even after I caught my mistake and hooked wire back up.) At that point I was sweaten bullits. How I fixed it was to disconect battery for several minutes. Dont think I will ever do that again.