Also, go to a car parts store like Autozone and get them to test your battery--they do it free. They will also scan for DTCs (trouble codes) free and that will tell you what the mechanical problem is.
Sound's like a dead battery. The OEM 12V batteries in gas model 5th gen RAV4s are only lasting around 3 to 5 years. If you live in a hot place (S.Calif, Az., Tex) and have never checked the cells they may be low on electrolyte and the lead plates are exposed and sulfated.
I'm having my husband check on it. I saw a few videos saying the unplugged/charged the battery and it worked. Hopefully that does the trick. Thank you
What need to do
Fix the problem with "check engine " light and AWD should be fine.
I guess they found NO DTCs. Don't you think it sounds like her problem is the battery? Same thing happens frequently on our 5th gens.
I explained to myself OP reply like:
Car parts stores like Autozone and O'Reilly's will do a FREE scan for DTCs. If they have a good, more expensive scan tool it will give you the DTC codes that will tell what is wrong with your cars. Write down the DTC codes #s and TELL US! We can then give you better help and advice. Also get your batteries and alternators tested FREE at the car parts stores. Quite often weak and malfunctioning batteries can cause the AWD and CC not to work. Even if your cars start OK, if the battery resting volts are low it can cause all manner of issues.
OK!! DTC P5406 is a small leak in the Evaporative Emissions System (EVAP). It is a VERY hard thing to find where the leak is. I think you said before you replaced the gas cap. I hope you bought a NEW one at the DEALER. That's a common source of the EVAP leak. If you bought the cap at a parts store it might be a no good, Chinese fake that is still leaking. NOW that there is the P5406 DTC I think you MUST get the "smoke test" at the dealer. It is the ONLY way to find the leak. They pump a colored,florescent gas into the fuel tank. It will escape at any leak--even a tiny pinhole. They then use a UV lamp to see the colored staining where the leak is. It could be anywhere...charcoal canister, purge valve, rubber hoses under car or in engine compartment, filler neck. Depending on where the leak is, fixing it could turn expensive.
To fix the problem, you need to stop by the dealership and do a transmission software update. Good luck
Do you remember what update they performed on your car? Maybe TSB number? Do you have the paperwork from the dealer?
I have no idea, just had a similar problem and found the answer on one of the forums
Thank you in advance.
