Hybrid system not starting after front brake pad change

2010 Prius IV:

Problem - when trying to start the car, it doesn't start. Several malfunction lights are on - Brake, ABS, Power Steering, Check Engine light, Charging System malfunction etc.

What I did before problem started - DIY front brake pad replacement on both sides. I disconnected the 12V battery before doing anything. Jacked up the car, removed the wheel, turned steering wheel to one side, removed caliper nuts, replaced pads and clips, compressed piston (loosened the brake fluid cap before this), put everything back together, repeated on the other wheel. Once this was done, connected the 12v battery, pumped brakes 5-6 times and attempted starting the car. Results as above.

Since encountering the problem, I have tried following without success -
1. The emergency startup process per manual
2. Shorting pin 4 and 13 of OBD2 port, starting car in accessory mode and pumping the brakes 8 times in 5 sec or less.
3. Reading code through a basic OBD2 scanner - it shows no faults/codes
4. Disconnected 12V battery, left it for an hour or so and connected and retried.

I did forget to tighten the brake fluid cap before my first attempt to start the car. I tightened it after I realized it, but no success.

Anyone here experienced such issues after brake pad replacement? Any next steps I should try before towing it to the dealership?

 

ABS is just one of the indicator, there is also Power Steering Wheel indicator, Brake System failure indicator, Check Engine light and a couple of others. The OBD code reader I have is a basic one. Do I need more advanced reader to get codes?

 

Yes, I suspect somehow fault codes got set when it attempted startup after reconnecting 12v battery. Would these Techstream supported OBD readers help clear the codes, or just read them? I understand if there is a real problem I might still have to go to the dealership, but it would be awesome if the reader can help clear the code and start the car.

 

Yes, I think that might be the culprit. But now that it is properly pressurized, would simply clearing the codes with the Techstream OBD Scanner get the job done? If I ordered new OBD Scanner with Techstream, it will take a couple of days to arrive and I will have to somehow procure a 32-bit Windows laptop. I am trying to determine if this is something I can fix on my own with help of techstream. What are the chances of not having to tow the car to the dealership (and pay them to fix it)?

 

Thanks. Tried this already yesterday ( shorting pin 4 to pin 13 and pumping brakes 8 times in 5 sec). Found a demo of techstream software on youtube that has a 2 sec portion on how to clear the codes. I am leaning towards going through couple of days worth of wait for the scanner, finding/installing 32-bit windows on a laptop and techstream software installation pain before towing it to the dealer. Haven't made up my mind yet.

 

Is this a problem? I turned it to get better access to the caliper assembly. Should I have done it before disconnecting and reconnect it between the wheels to turn it the other way?

 

Update: Issue resolved.

Stupid 12v battery. I didn't think it would be a problem as I had been driving it pretty much all day the day before, but when I went to try something in the evening, I noticed the interior lights were dim. Checked 12v, sure enough it read 10.34v. Connected the jumper cable and it started right up. No malfunction lights. Just back from driving around for an hour.

Thanks for all the responses!

 

Yep, need to learn to listen to the experts around here! Thanks!!