All my brake lights wont work and if you run a wire from brake pedal to rear bulbs then it works. Is there another switch somewhere?
Not unless you have an auxiliary relay box for trailer towing.
No I don't
Then you have a broken wire somewhere from the brake light switch to the lamp assemblies.
Looking for a Used RX 300 in your area?
CarGurus has 999 nationwide RX 300 listings starting at $1,794.
Search Lexus RX 300 Questions
Are you a UK consumer? CarGurus now has a discussion forum in the UK.
Lexus RX 300 Experts