[Sean Nelson]

I've noticed that I often roll down the left rear window when I want to roll down the driver's window. The four window buttons all feel the same and it's easy to toggle the wrong one:

So I took a triangular file and filed a small notch in the switch for the driver's window:

Now it's easy to tell the driver's window switch by feel and I no longer roll down the rear window by mistake:

 

[TimBolt]

You can also buy inexpensive clear plastic round stickers with a small raised dot in center. These are often used for individuals with visual problems.

 

[GregBrew]

You can also buy inexpensive clear plastic round stickers with a small raised dot in center. These are often used for individuals with visual problems.

...and for those on a lease, won't be construed as "damage".


Don't get me wrong, though. I think it's a great idea.