May I request some assistance, please?
2013 W204 C220 CDI.
I am experiencing an undesirable banging sound from the front.
I have reviewed previous postings on this platform, but...
Knock is a metal-to-metal contact.
Originating from the passenger side, to the best of my knowledge, based on the tests we have conducted.
On smooth roads, there is either no sound or perhaps a barely perceptible knock that I can detect, but not the passenger.
Passengers may also hear on other roadways.
It has been occurring for many months, around six months.
Initially experienced occasional little knocks, which then escalated to a constant issue.
Each weekend, I inspected the garage for any banging sounds and ensured safety.
Discovered on both sides that the lower ball joint/arm exhibited some play.
Altered them.
The upper ball joint/arm on the passenger side exhibited play and produced a little knocking sound. Altered that.
The wheel bearing was somewhat loose; it has been tightened.
Subsequently, we discovered that the shock absorber on the passenger side was bottoming out. Replaced both shock absorbers. The springs seem satisfactory.
The knocking persists. As I said, components have been replaced individually almost every weekend, anticipating the elimination of the banging sound.
I fully opened the hood without using jacks, ramps, or lifts, with the vehicle remaining on the ground. I stood on the area where the strut is secured at the top of the engine compartment and bounced the car, resulting in an audible banging sound.
The engine mounting seems to be the issue, since there is considerable engine movement; thus, it was replaced this weekend.
Contemplating that everything is satisfactory.
No. Once again, positioned on the engine bay strut and oscillating the vehicle, hands flailing in all directions...
The sound emanates just from one side when the automobile is stationary and when the driver's side is similarly bounced. While operating the vehicle, the sound seems to emanate mostly from the passenger side, however it is also perceptible at the front by the bumper.
The roll bar linkages to the strut have been replaced. However, not the shrubs. Or the strut bearings.
What assistance can any of you provide?
No steering oscillation. No swaying permitted.
Thank you, team.
Wishing you a pleasant day.