R/R the right air spring. Noticed the right side spring was sagging lower than the left after being parked for 2-3 days or so.

Took me a little longer than an hour. Most annoying part was removing the underbody cover to disconnect the pump.

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e70 - purchased 6/2018
e36 - wouldn't pass smog at 190k 2016
e53 - transmission blew at 225k 2012
e30 - sold as it was a little slow for a DD and burning oil at 220k 2011