Please remember that all How To guides are followed at your own risk. Neither Clubjazz, the administrators/moderators or the posting member accept any liability from following these guides.Changing the battery on a Jazz is not as strightforward as you might think. Its not the actual process of changing the battery which is the problem its the electronics on the car that get affected by the lack of power whilst you change it. If you are not happy to take the risk of causing a fault with your power steering (apparently this can happen...) give it to a dealer to do it for you instead.
Problems that can be caused by changing your battery:
- Erratic or high engine idle
- Bad fuel economy
- Heavy power steering
- Windows dont open completely
- Loose your radio presets
- Lock out your radio if it is key coded
- Have to reset your clock
I will try to help you avoid some of these problems with this guide.
Do not be tempted to use a battery operated radio key code saver as Haynes mentions this might deploy the air bags... PREP FOR CHANGING THE BATTERYLeave one door open: In case the central locking triggers when you remove the battery. Turn off interior light and keep the key with you at all times.
Turn off the engine and any devices draining battery power (phone chargers, sat nav etc.)
REMOVING THE OLD BATTERYAvoid touching the body of the car with tools whilst they are in contact with the battery terminalsDisconnect Negative: Loosen the nut and remove the (-) clamp. Isolate the clamp in a rag.
Unscrew both top nuts: Loosen both of the top nuts on the battery clamp. You only have to do it enough to free the clamp (don’t have to remove the nut completely).
Remove clamp: Remove the clamp from the vehicle (with nuts still attached).
Remove Positive: Lift the plastic flap, loosen the nut and remove the (+) clamp. Isolate the clamp in a rag.
Remove Plastic Box: Slide off the plastic box around the battery
Remove the Battery: Remove the battery from the vehicle
FITTING THE NEW BATTERYAvoid touching the body of the car with tools whilst they are in contact with the battery terminalsClean Tray and Plastic Box: Wipe with Tissue should be fine.
Fit Battery: Insert the new battery on to the vehicle
Fit the plastic tray: Refit the plastic tray
Fit Positive: Fit (+) clamp and tighten nut
Refit Clamp: Refit battery retaining clamp and tighten both nuts
Fit Negative: Fit (-) clamp and tighten nut
AFTER CHANGING THE BATTERYRetrain the ECM !!Important!!1. Start the engine and run it at 3000 rpm until engine warm.
2. Run Engine idle for 5min with all loads turned off.
3. Lastly drive the car normally for at least 5min.
Im not sure what happens if you dont train the ECM properly, but Haynes states that the training sets the idle speed. Posts on the net suggest high revs at idle and bad fuel economy can result from not following the above procedure. If you take it to Honda to change the battery they get a computer to retrain the ECM, whether this has any real benfit over doing it yourself I dont know.
Reset electric windows: Fully open the window and keep key pressed a few secs.
- Close the window and keep key pressed a few secs. Do this for all windows. This apparent resets the cars perseption of what constitutes an open and closed window for the one click open/close feature.
Clock: Reset the clock
Radio: Reset the channels on the radio
If a fault is reported on your dashboard after changing the battery it is probably the steering. See Chapter 10 Section 9 of Haynes. Sometimes the fault can clear just by driving, if not its fiddly to fix.
If your radio gets locked out because it is key coded you will have to take it to a dealer to unlock it.
Notes:I have carried out this procedure myself and the information above is a mix of info from the Haynes manual, my own experience and things picked up from the net.
The Jazz Haynes manual can be obatained here:
http://www.haynes.co.ukNB: for some weird reason neither Fit or Jazz manuals show up on Haynes.com, so use the co.uk site.
Note: Battery change related sections in Haynes = 5A /2, REF /7 and 10 /19