Toyota Echo key fob battery
1 of the 6 model years listed for the Toyota Echo have a proven battery. The most common answer is CR2016. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.
- 2000-2002Key-head remote
Not confirmed yet
- 2000-2005Remote (separate)
Not confirmed yet
- 2003Remote (wireless remote control transmitter)
CR2016
Owner's manual: manua.ls (checked Nov 1, 2026)
Manual text: “For replacement, use a CR2016 lithium battery or equivalent.”
Find CR2016 on Amazon - 2004-2005Key-head remote
Not confirmed yet
Changing the battery
Separate remote fob
- A separate fob has no key blade inside, so it opens with nothing but a coin or a small screwdriver.
- Turn it over: some older fobs use one small screw, newer ones just clip. Pry at the seam once any screw is out.
- Replace the cell, keeping the + side where it was, and check the small metal tab still touches it.
- Snap the case shut and watch for the lights to flash when you press lock at the car.
A CR2016 is 20 mm across and 1.6 mm thick. CR2032, CR2025 and CR2016 share the same width but not the same thickness, so a swap between them can leave a loose contact or a case that will not close.
Coin cells are a choking and burn hazard for children. Store the spares in their original pack, out of reach.