Hello

I have a 99 E36 323i sedan, 72K miles my brake warning indicator is on
I checked brake fluid level, changed front pads, checked rear pads (75% left) but my warning is still on, what else triggers this warning to come on, do I need a reset tool to clear it?

I have also read I need to change my brake pad sensor for a new one every time I replace pads is this true ?

If I need a reset tool will I be able to use it on my 95 E34 525i also?

Thanks

Xavier