My car's istop battery has malfunctioned for two months now and I'm still driving it. Touch wood still ok can start up etc. Can someone remind me if I can still get a battery change from Mazda FOC if I've had my car for more than a year? I read somewhere you can change the battery once but don't remember if there was a time limit. If not, what battery should I change, where and how much?

Anyway I suspect my car's battery effed up because I let it sit too long without starting the car coz I was away for 6 weeks. I asked my cousin to start it but she didn't so.. oh well.

Last thing, does anyone's steering wheel vibrate noticeably while braking/slowing down around 80-90 mph? I don't remember if it used to do that before, so I am not sure if this is normal or if I should bring it up the next time I service my car. Thanks for the help!

mind to share location?

As long as Q85 EFB (Enhanced Flooded Battery) is dedicated for iStop.  In the market you can find these battery from Amaron/Varta/Bosch/Maxlite/Yuasa/Delkor and so on.  Price range from RM 400+ to RM 600+ aftermarket price.

If your stock battery is still under warranty, get it replaced free of charge and Mazda will do the resets for iStop, power windows s well as power steering angle position for you.  If out of warranty, you cn buy outside SC and get the resets done by your own.