Toyota Matrix key fob battery
3 of the 11 model years listed for the Toyota Matrix have a proven battery. The most common answer is CR2032. Rows below run oldest to newest; a year can appear twice when the car came with more than one kind of key.
- 2003-2004Remote (separate)
Not confirmed yet
- 2003-2005Remote (separate)
Not confirmed yet
- 2006-2008Remote (separate wireless remote control transmitter)
CR2032
FCC ID GQ43VT14TTwo sites agree: americankeysupply.com and bestkeysupply.com (checked Nov 2, 2026)
Find CR2032 on Amazon - 2009-2013Key-head remote (key with wireless remote control)
Not confirmed yet
Changing the battery
Separate remote fob
- The remote is a small standalone unit. You will not need to touch the ignition key at all.
- Look for a screw on the back or a notch on the edge. Remove the screw if present, then twist a coin in the notch to split the case.
- Replace the cell, keeping the + side where it was, and check the small metal tab still touches it.
- Close the fob and test it. If it does not work, open it again and check the cell is seated flat.
A CR2032 is 20 mm across and 3.2 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.