V220 air conditioning leak located below the dashboard.

[VibrantShin]

The air conditioning light on our V220, 447 (2019) has extinguished and emitted a hissing sound beneath the dashboard. The diagnostic indicates low refrigerant (B119184), suggesting a potential leak. Observed an unusually huge pool of condensation behind the back tire after a five-hour ride; I suspect the condenser is at fault.
Is this a dash-out procedure to possibly replace an O-ring, given that it is one month out of warranty? Thank you in advance.

[AmericaMonster]

Mercedes air conditioning The evaporator in the dashboard emits a hissing death rattle sound when the gas pressure diminishes. If the noise is really this, it may not indicate a problem with the dashboard, which would be advantageous.

[depofly]

In the event of gas loss due to a leak, the system will lack lubrication, resulting in audible mechanical noise from the compressor while the engine operates and the air conditioning is activated.

The location of the condenser on the W639 is inside the engine compartment, while I am unfamiliar with the W447. I engaged a mobile air conditioning professional to assess the unit at my residence; he subsequently installed a new Behr unit for a total cost of £280 eight years ago.

[VibrantShin]

According to my local expert, the leak may originate from the evaporator; however, accessing it requires the removal of the dashboard. The system fails to retain gas overnight.
I anticipate this will be an expensive repair, so I plan to schedule an appointment with my local Mercedes-Benz dealership, since there may be some goodwill depending on the component, according to their claims.

[AmericaMonster]

Have you seen the "similar threads" about the Viano/Vito that are just under this one? They discuss an air conditioning line delivering refrigerant to the evaporator under the fuse box and issues arising from a retaining clip. To what extent do you engage in do-it-yourself activities? Could you allocate around thirty minutes to disassemble and inspect? The skill level seems to be rather basic, and the tools required seem to be minimum.

[VibrantShin]

Thank you; why did I not consider that? Indeed, I can use a spanner and have the time available.I will proceed to read them.