Feature that turns on the head and taillights when unlocking the car via keyfob

Toyota Techstream diagnostic software would allow you to turn that feature on if it's an existing feature... Otherwise you could DIY a solution by tapping into wherever the flasher signal is and figure a way for it to include the headlights. That'd be beyond my skill level, but to a typical electrical engineer, it wouldn't take much time to figure it out...

 

I wanted to do the same thing but have underglow come on when you unlock with fob or door. Good luck to us

 

That one is easier than headlights... Splice your undercarriage LED into the wiring circuit that turns the dome light on and off when you unlock / lock the car, then reduce the wattage of the dome light so LED wattage on the undercarriage doesn't create so much of a drain that it gets the ECU or others sensors attention/problems.

 

Thanks for the reply, that's where I am having 1st world problems; for the underglow to stay on after the car is put into gear. Won't even worry about having it controlled by a relay in conjunction with low beams either, that will complicate things. Same with OP, if his headunit comes on when unlock and then puts car into gear, the HU will go off in gear by hooking it up the puddle light method.

The way to solve this is to have a relay with 2 input positives; one for ready 12V & puddle light 12V. Puddle light comes on and powers up head unit or underglow. When engine is in gear, the puddle light 12v cuts off but the ready 12v keeps the HU or underglow on.


As for welcome home lights, they have a relay for that which you can replace the stock one behind driver dash. It can do welcome homing, wig wag, euro turn signaling, eliminates resistors for strobing LEDs and other cool stuff. But those are someone else's wants