These instructions apply to the BMW X5 Mk4 (G05) 2018-Present.
For other models, please choose your vehicle here.
On the BMW X5 (G05, 2018–present) the 12V battery is in the luggage compartment (right-hand side, under the floor/trim) — not the engine bay. Follow the order and after-steps below so nothing is left disabled.
How to Disconnect and Reconnect the X5 (G05) Battery
- Switch everything off, make sure the key is away from the car, and the ignition is off.
- Open the tailgate and lift the boot floor / remove the right-side trim to reach the battery.
- Disconnect the negative (earth) terminal first, then the positive if required.
- Do your work. To reconnect, fit the positive first, then the negative, and tighten both.
- Switch the ignition on and let the car settle for a minute before starting.
After Reconnecting
- The CBS service clock stops while the battery is off — check the date/time is correct.
- Re-initialize the windows/sunroof if one-touch has stopped (close, then hold the switch up briefly).
- Driver-assistance and comfort features may need a short drive to re-calibrate.
Jump-Starting Instead
For a jump, don’t open the boot panel — use the dedicated positive jump terminal in the engine compartment (under a cover) and an engine earth point. It’s safer than reaching the boot battery.
Frequently Asked Questions
Where is the battery on a BMW X5 G05?
In the luggage compartment on the right, under the floor/trim. The jump-start posts are separate, in the engine bay.
Will disconnecting the battery reset the service light?
No — CBS data is stored in the car. Use the trip-button CBS reset for the service light.
If a warning stays on after reconnecting, look the code up on autodtcs.com.
Independent guide — not affiliated with BMW. Always follow your official service manual and safety precautions. Read our full disclaimer.