Though I previously posted a problem with my car not shutting off, I'll join in on this one. My car's locks will not work as well. I never thought about possibly the vaccuum pump since the transmission is shifting normally and the brakes are fine. Until I get a hold of a mighty vac tester, is there another route to take in troubleshooting a leak. Also, where do I began, at the pump?

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1999 MB SL500 (110,000 mi)
2004 Volvo V70 2.5T (220,000 mi)
2014 Tesla Model S 85 (136,000 mi)
MBCA member