These instructions apply to the Nissan Armada Mk1 (TA60) 2004-2015.
For other models, please choose your vehicle here.
Disconnecting the 12-volt battery on the Nissan Armada (TA60, 2004–2015) is easy, but the order matters and there is one Intelligent Key quirk to know about. Here is how to do it safely and what the SUV needs relearned afterwards.
An Intelligent Key Warning First
On Intelligent Key models, once the 12-volt battery is fully flat the ignition switch cannot be turned out of LOCK — not even with the mechanical valet key. If you are dealing with a dead battery rather than deliberately disconnecting one, you will need to jump start (or fit a charged battery) before the ignition will move. For a planned disconnect this is not an issue.
Disconnecting and Reconnecting
- Ignition OFF, doors closed, all loads (lights, climate, audio) off.
- Undo and lift off the negative (−) terminal first, and move the cable clear of the post.
- If taking the battery out, remove the positive (+) terminal next.
- Refit in reverse: positive (+) first, then negative (−) last.
- Tighten both clamps and check neither moves on its post.
What to Relearn Afterwards
- Idle: a rough first start is normal — run the idle-air-volume relearn if it does not settle.
- Auto windows: the one-touch up/down needs reinitialising.
- Clock, audio and info display: reset the time, re-enter presets, and any maintenance-interval reminders may need checking.
- Security: the immobiliser indicator resumes flashing on its own.
Frequently Asked Questions
Why negative first? With the earth (−) off, a spanner touching bodywork on the positive side cannot short out.
Will this clear fault codes? It may clear some stored data but fixes nothing — a real fault will relight the lamp after the next drive cycle.
My ignition won’t turn after the battery went flat — is it broken? No. On Intelligent Key models a flat 12-volt battery locks the ignition in LOCK; restore battery power and it frees up.
Do I need a memory saver? Optional — it preserves the clock, presets and learned values so you can skip the relearns, but the Armada is fine without one once you complete them.
If a dashboard warning stays on after reconnecting, our sister site autodtcs.com can help you look up the code.
Independent guide — not affiliated with Nissan. Always follow your official service manual and safety precautions. Read our full disclaimer.