1997 LHS rearview mirror

[katherat]

What's the deal with the rearview mirror?
It's got a day/nite button on the bottom but I'm not sure what it does. Is it electronic? (I bought the car used.)

 

[Art]

Yes, it is supposed to reduce glare from headlites coming up your rear. It's effect is obvious if it is working. Try at nite with on and off position to see the difference with someone's headlites on behind you.