Have this Mercedes pull up with a very loud whistling/squealing noise, one of my guys pulls the belt to check pulleys and find still makes noise. Pull the oil cap and noise goes away. Check and found tsb S-B-01.20/24a for same symptoms, order a PCV cover a...

FIX posted 5/22/2024

iATN Members:
Login to view full TechHelp request
Auto Repair Pros:
Join iATN to read this TechHelp request
Vehicle Owners:
Find a nearby iATN member to repair your vehicle