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2021 Jeep Grand Cherokee L Summit
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(This is all what I believe, not bothering to look it up right now though)
I believe that headlight washers are a legal thing, not a "feature". They came about when HID lights were released. HID are bright (obviously) and focused very well, when they get dirty, they can send light where not intended and blind oncoming traffic more then before, so headlight washers were mandated to help reduce this. This may not apply to LED lights, maybe? Again, just surmising what I have found. And maybe in Australia they are mandated?
I don't think my 2021 Summit L has them, with LED lights, maybe they aren't mandated here anymore? But I do have camera washers, which is cool in a way!
 
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