Cadillac ELR key fob battery
1 of the 3 model years listed for the Cadillac ELR 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.
- 2014-2015Unknown
Not confirmed yet
- 2016Remote (manual says RKE transmitter)
CR2032
Owner's manual: carmanualsonline.info and energizer.com (checked Nov 1, 2026)
Manual text: “Replace with a CR2032 or equivalent battery.”
Find CR2032 on Amazon
Changing the battery
Separate remote fob
- The remote is a small standalone unit. You will not need to touch the ignition key at all.
- Find the slot along the edge and turn a coin in it. Go slowly so the clips do not snap.
- Swap the cell or cells, keeping the same side up as the old ones.
- Snap the case shut and watch for the lights to flash when you press lock at the car.
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.
If a child might have swallowed a coin cell, treat it as an emergency and get to a hospital right away.