Air injection blower won't stop running on a 2002 Mercedes S500?

If the air injection blower on your 2002 Mercedes S500 won't stop running, it could be due to a faulty relay, a malfunctioning air injection pump, or a vacuum leak. Check the relay and associated wiring for any signs of damage or corrosion. Additionally, a stuck position in the control module may also cause the blower to remain active. If these checks don't resolve the issue, it's advisable to consult a professional mechanic for further diagnostics.