Help, 2008 prius will not start, no light on dash board or anything

Hi guys, while I was installing the after market radio and testing it, I had my open opened(unwrapped) I think 2 of the wire contact each other which caused short circuit or something. Right now, when I push the start button, I don't see anything come up. It seems like the prius is out of the power, however the horn and emergency button(left and right signal blinks) still work. Anything else are not working. I also checked the fused, none of them were blow. I am really confused at this point. Can anyone help please? Thank you in advance.

 

I meant wires, I couldn't edit my post.

 

I am going to get a multimeter tomorrow. I don't think I have disrupted the wires. At first, my after market radio(pioneer nex2300) screen come up and I was playing it, then I see some fires from the unwrapped wires. Then the car won't start again. I thought I might have short the batttery, but the emergency lights and horn still work. anything else will not work. lock, unlock wont work. I can't start the car now.

 

Thank you for replying, if the Instrument panel fuse is burnt. shouldnot the lock unlock or headlight switch still work? I suspect there may be some main fuse which is blown? is this possible?

 

some updates, I finally found the issue. one of the fuse was blown "Audio system, interior lights, smart entry and start system, gauge and meter, turn signal lights, luggage room light, clock". I replaced and I see the light come up now on the dash. Now I have encountered another issue.
The car will not detect my key, I am now able to start my car. I can still use lock and unlock functions on the key fob, however when I entered the car, the key warning light is on. Any ideas?

 

Some more symptoms:
1. when I insert key to slot and pushed start button. nothing light up.
2. when I take out the key from the slot and push the start button, the screen light up.
3. When I push the start button again. all dash light come up and then I can only shift to Neutral gear.

 

I have tried to disconnect the negative terminal and reconnect. I have tried 3 times and it didn't start the car. Also when I insert the fob into the slot and push the start button. Nothing will happen. does that mean this is a bad key?

 

Did you mean to unplug the wire behind the key slot and try again with key on the pocket? I mean when I have key on hand, I can start the multi functional display and dash-lights. but I can only shift to neutral. The ready message will not come up.

 

Thanks Paul, At this point. I don't even care about my head unit. I have put back my old radio unit. The wires were not cut or anything. I was using a module adapter which connects to the factory harness. The black tap that is in the picture is where I got my fuse blown.
I have put back my factory head unit and replaced my fuse and now I can see the dash board light . I was happy first.

Then I went to start my car, here is the symptom.
1. I can lock and unlock my car. The door unlocks if i stand next to my car.
2. I opened up the door and sit in the car. I see the immobilizer flashes. If I keep key with me.(not inserted in the key slot). At first push of start button. I see the screen turn up, I don't see anything at dashboard at this point. I push the button again, the icons on the dash board light up and I don't see the ready message and I can only shift to neutral.
3. If I insert the key into slot and push the button, then nothing happens.

Things I have tried, I have used jump start to hook up the engine fuse box just in case it is 12v battery related issue. I also measure the volt with my meter and I see 12.5 volt on the display, I think it is not battery related.

Some background about the key. I used to have 2 keys with me, and my GF lost one of my keys and I got a OEM key from a dealer and got it programmed. Then she has one of key and lost it again, I m not sure if the lost one is master or it is the one I programmed. I only have one key with me at this point. I suspect something might got reset and this key will not work anymore? is it even a possibility?

 

Hi Paul,
First, sorry about my poor english, I finally sorted out the issue, there is a missing fuse on "9 OBD 7,5 On−board diagnosis system". I don't how it happened, maybe when I was checking on the blown fuse I inserted the fuse into wrong slot. Anyway, there are many spot where fuses are missing on my cars under the steer wheel. I don't know if all of them are necessary. Probably you can help me on that.

I finally got my car started and I'm so happy about it. The first thing I do is to come to here to report it back to you. You were really helpful. Thank you again! Thank you for everyone who helped me. I will report back when I got my stereo head-unit installed.