E220 2.1 diesel w212 2014
E220 2.1 diesel w212 2014
Hello, I’ve taken my car to the garage and it comes up on a snap on OBD 2, saying low boost.
I have a whistling noise, this is only there when the engine is on, and/or when my ac unit is on.
It stops when my engine is off, when the AC unit is completely turned off.
any ideas?
I have a whistling noise, this is only there when the engine is on, and/or when my ac unit is on.
It stops when my engine is off, when the AC unit is completely turned off.
any ideas?
Last edited by Louisc999; Aug 13, 2025 at 07:27 AM.
Out Of Control!!




Joined: Apr 2019
Posts: 11,727
Likes: 6,670
From: Silicon Valley
W212 MY'14 M276-3.5NA @75kMi
MULTIPLE ENGINE ISSUES
Hello, I’ve taken my car to the garage and it comes up on a snap on OBD 2, saying low boost.
I have a whistling noise, this is only there when the engine is on, and/or when my ac unit is on.
It stops when my engine is off, when the AC unit is completely turned off.
any ideas?
I have a whistling noise, this is only there when the engine is on, and/or when my ac unit is on.
It stops when my engine is off, when the AC unit is completely turned off.
any ideas?
Your car needs timely maintenance. Get this worked on by local MB specialist soon. This shouldn't cost much because you're early.
Keep up with 5000Miles oil service.


