On my Titan there was a release on the steering colum where my shifter was located. I actually had to use it the first day I had my truck. My battery must not have been fully charged and I was playing with all the gadgets and ran the battery down. My car was parked in the garage all the wall against the front wall so when I needed to jump start, I could not open the hood. I had to look in my manual and find the manual release and put it into reverse to back it out enough to open the hood. I just popped off a cap and put a mini screwdriver in to release it. I am sure Toyota must have something similar. Check your manual under transmission. I will look in my manual after I get off work.
2005 Tacoma Dbl Cab 2WD, V6/AT, Speedway Blue, Build Date 6/05, TRD Sport Pkg./Tow, JBL Stereo, Chrome Tube Steps, OEM Hood Protector, Ashtray(coin holder), Sill Guards, Bedmat, Locking Gas Cap(10509), Fold-A-Cover Tonneau, Electric Tailgate Lock.