These instructions apply to the Ford Explorer Mk5 (U502) 2011-2019.
For other models, please choose your vehicle here.
Before electrical work on a 2011–2019 Ford Explorer you disconnect the 12 V battery, negative first. The SUV relearns its idle and shift strategy afterward. This is the US-market procedure.
- Ignition off, key out, eye protection on.
- Open the hood; the battery is in the engine compartment (group 59, or group 65 with Intelligent Access).
- Remove the negative (−, black) cable first, then the positive (+, red).
- Reconnect positive first, negative last.
- Reset the clock and radio, then idle to temperature and drive to let the idle and transmission strategies relearn.
FAQ
Why does it idle or shift oddly afterward?
The engine and transmission relearn their adaptive strategies after a disconnect — it settles after a short drive.
Which cable first?
Negative off first, negative on last.
What battery does it use?
Group 59, or group 65 on vehicles with Intelligent Access; the manual lists the part, not a CCA figure.
If your Explorer stores a fault code with the warning light, look it up on autodtcs.com.
Independent guide — not affiliated with Ford. Always follow your official service manual and safety precautions. Read our full disclaimer.