2003 toyota avalon xls abs,traction, and vsc lights come on when raining

Question edited for clarity.
Question moved to model category.

Best way is to use a pressure bleed system which adds brake fluid under pressure from the caliper and up the the reservoir.

https://www.google.com/search?q=2007+Toyota+Avalon+XLS%2C+bleed+ABS+brakes

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You have a few different things coming up as these lights and codes. I'll list the code meaning below.
Did you mean the VSC light? VSC, Traction Control and ABS all refer to your braking system so get it fixed AS SOON AS POSSIBLE!
The '505' code refers to the air flow management system in the air intake manifold. The other codes refer to the EVAP system on the vehicle. This may seem a silly suggestion but check you fuel filler cap isn't loose, missing or the seal on the cap isn't damaged. The EVAP works as an air tight system and if it is leaking that is one of the most common causes, (and its a cheap repair).

P0441 = Evaporative Emission System Incorrect Purge Flow
P0455 = Evaporative Emission System Leak Detected (large leak)
P0456 = Evaporative Emission System Leak Detected (very small leak)
P0505 = Idle Air Control System

Have the remote checked. Remotes have batteries and will eventually go bad. In the worst case, you may need to buy a new remote and have it programmed.

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old car, and old ABS,
no FSM,
no alldata.com
no looking first at Toyota nation dot com>?
they are 2 digit flash codes.
95-98 is same
look it up here.
http://www.wellsve.com/custom_searches/abs_troublecodes.php?make=Toyota&model=Avalon&year=1996&code=39&submit.x=58&submit.y=28&confirm=1

above link is demo of code 39

The very first thing I would check would be if the battery cables are clean and tight. After that I'd lean towards a bad ignition switch. Do you have a ton of keys on your keyring? wiggle your key while its on to see if you can recreate the problem.

Clean all the sensors for you abs and wile you there see if the wheel bearings are good and drive shaft, some times they mess with the sensors.

Hi I have a 2003 Toyota Avalon xls so, lol I do front wheel burn out how? I put water on the front right tire pull the E brake, turn off traction control by pressing the TRAC OFF button under the steering wheel panel now the TRAC OFF button is not working or showing on the dash so abs/traction contrition is on at all times how can I fix it or disable traction control with out the button?

Anytime the Check Engine light comes on, you will find that the VSC and TRAC OFF lights come on as well. Supposedly, it's in order to lighten the load on the car's computer when things are going wrong. Find out what the Check Engine code is (for free at your local Autozone?), and get that taken care of before worrying too much about the VSC or TRAC OFF lights.

VSC stands for vehicle stability control and trac is traction control they are incorporated into the ABS system all receive signals from the wheel sensors you must use a digital ohms meter to find the one reading different and replace it in some cases you might find bad connections at the plugs.in any case your brakes will work fine you just wont have ABS braking or traction control

Autozone will check your engine codes for free.