Hello, while driving my 2001 SLK320 (only about 32,000miles) the "Check Engine" light came on and refused to shift out of first gear. Immediately had the transmission fluid checked and found it to be near empty! After filling this back up whenever I restart the car the "check engine" light is still on and the car refuses to shift out of first gear...I'm guessing it is in "limp home" mode? Any ideas what might be causing this here? Thanks for any information.