Toyota prius 2005 shows up problem after scan its code P0A0D

you have two coolant systems on a hybrid. both systems should of had the coolant changed (due @100k). Spark plugs should of been changed (due @120k). those re the two high mileage maintence items I would be sure were done. Toyota dealer can change the beep to a single beep instead of a constant beeping.

VSC ABS and ! lights plus red (!) - Toyota Prius Forum ...

www.priusonline.com/...toyota-prius.../19804-vsc-abs-lights-plus-red.ht...

Jun 3, 2008 - 8 posts - ‎3 authors
If the accumulator fails, you will get a red brake warning light and the pump will now run continuosly until it burns out. ... hydraulic pressure to the brake system and "no"red warning lights. .... Fog Lights, PassGas, Toyota Prius General Discussion, 4, 10-13-2005 09:12 AM ... 11-13-2015 10:01 PM by Tim Lee.

Alarm with Brake Light, ABS, VSC and amber warning lights ' PriusChat

priuschat.com > ... > Gen 2 Prius Care, Maintenance and Troubleshooting

Jul 26, 2005 - Later that same day - I started getting an alarm - as soon... ... Gen 2 (2004-2009) Toyota Prius Forums > Gen 2 Prius Care, ... Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by NorthStar, Jul 26, 2005. ... I am getting the red BRAKE LIGHT, the amber waming symbol, ABS, and ... VSC, ABS, (!) and emergency brake light on
Feb 5, 2010
Brake, Brake warning, ABS, VSC appear
Oct 5, 2008
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It needs computer scanning.

You need a scan tool or a code reader to do it but,if the problem still exists then the lights will come back on.You need to retreive the troubles codes from the computer to see what area of the engine that problem exists and go from there.

Try reprogramming it, I think the dealer needs to do this as it takes a scan tool.

You can have the computer scanned with a diagnostic tool, to see if there are any diagnostic trouble codes stored, most autoparts stores like Autozone offer this service at no charge. Knowing the code numbers and the description will give you some idea as to what the problem may be.

http://priuschat.com/forums/gen-ii-prius-care-maintenance-troubleshooting/78276-07-prius-wont-start-after-repairs.html

Service plug failure

you cant eliminate beeper yourself but if you taake it to the dealer it being so new they have to hook up the scan tool to turn of your beeper as long as its as factory system i work at a toyota dealer and we do this for cust a lot our computer has all the options in you car that are changeable due to the cust preference hope this helps

You will need to have this light reset with a scan tool, it is stored in a non-volatile (stays in memory with or without battery voltage) memory. Have the dealer check the cause, better than a tow bill.