Nissan 370Z Forum - View Single Post - "Clunk" caused by VDC Diagnostic at Start-Up

resopaton · 08-20-2010, 04:08 AM

So I was doing some homework on the VDC system and came across something in the Owner's Manual I found interesting.

In section 5-27 it says:

The VDC system computer has a built-in diagnostic feature that tests the system each time you start the engine and move the vehicle at low speed forward or backward. When the self-test occurs, you may hear a "clunk" noise and/or feel a pulsation in the brake pedal. This is normal and is not an indication of a malfunction.

Has anyone else heard or wondered what the "clunk" was?

08-20-2010, 04:08 AM	#1 (permalink)
resopaton Base Member Join Date: Oct 2009 Location: Joplin, MO Posts: 84 Drives: 13 PW Nismo Rep Power: 15	"Clunk" caused by VDC Diagnostic at Start-Up So I was doing some homework on the VDC system and came across something in the Owner's Manual I found interesting. In section 5-27 it says: The VDC system computer has a built-in diagnostic feature that tests the system each time you start the engine and move the vehicle at low speed forward or backward. When the self-test occurs, you may hear a "clunk" noise and/or feel a pulsation in the brake pedal. This is normal and is not an indication of a malfunction. Has anyone else heard or wondered what the "clunk" was?