These instructions apply to the Daihatsu Sirion Mk2 (M3) 2005-2011. For other models, please choose your vehicle here.
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Disconnecting the 12 V battery on your Daihatsu Sirion (M3, 2005–2011) — for a new battery, winter storage, or work near the airbags — is a straightforward job. The battery is in the engine compartment.
Find the Battery First
The 12 V battery is in the engine compartment, in the usual front corner. Note your radio security code and preset stations before you start.
Disconnecting Safely
- Turn the ignition off and wait a short while.
- Disconnect the negative (−) terminal first, then the positive.
- Working near airbags or seat-belt pretensioners? Wait a few minutes after disconnecting.
Reconnecting
Reconnect positive first, then negative. Afterwards:
- Re-enter the clock and radio presets.
- If the driver’s window loses one-touch, hold the switch at each limit to relearn it.
- Warning lights settle after a short drive.
If Something Isn’t Right Afterwards
- Warning lights often clear after a short drive.
- A persistent light stores a code — look it up on autodtcs.com.
- Fit a like-for-like battery of the correct size and rating.
Frequently Asked Questions
Where is the battery on a Daihatsu Sirion?
In the engine compartment, in the usual front corner.
Which terminal first?
Negative (−) off first, reconnect it last.
Will I lose my radio code?
Note it first — you’ll re-enter the clock and presets after reconnecting.
How long should I wait near the airbags?
Give it a few minutes after disconnecting before working on airbags or pretensioners.
If a warning light stays on after reconnecting, look up the code on autodtcs.com.
Disclaimer: The information on this page is provided for general guidance only. Always follow your official service manual and safety precautions when working on your vehicle. We are not responsible for errors, omissions, or any damage resulting from the use of this information.
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