Torn engine air intake hose triggered abs/esp inoperable warning, LIMP mode

What is your question?

2010 Mercedes GLK 350 4-matic, replaced hose and no more abs/esp warning but still running in limp mode. Do I need to reset the ECU by clearing the code to take vehicle out of LIMP mode (transmission only allows 2nd gear and reverse, max car speed is approx. 30 mph); not seeing any leaks. Prior to replacing hose I could smell strong scent of gasoline. Also once car warms up I hear like a whistling type sound

What makes this problem better or worse?

it's worse when engine is cold

How long has your 2010 Mercedes-Benz GLK350 had this problem?

about 2 weeks - not driving it cause can't accelerate past 25-30 mph due to limp mode