WanderlustGuru

My primary confusion is to the 4MATIC system, rather than the potential protrusion of the rims from the fender.

The new wheels with an offset of 33 will protrude 10mm more than the appropriate ET of 42 - 46.

Consider detaching the crankcase breather tube and operating the vehicle (venting the crankcase to the environment as was customary in earlier automobiles). Your assertion that the issue originates from the exhaust and beneath the bonnet suggests a potential pressure problem caused by a clogged PCV line. I am not quite certain of the configuration of these engines (I can investigate more), but in most cases, the crankcase breather will experience positive pressure during boost and negative pressure (vacuum) during idle. It seems that there may be excessive pressure in the crankcase, causing oil to leak from certain seals under the hood and beyond the turbocharger.

This strongly suggests that the swirl flaps are causing the vehicle to enter limp mode. During the first startup, the swirl flap actuator does a sweep to assess the range of motion. If it identifies a deviation from specifications, it activates limp mode, but the engine management light may not illuminate. The vehicle performs the sweep just at the first startup; so, when it is subsequently turned off and restarted, the engine reverts to full power mode. Scanning it should reveal the error related to swirl flap deviation. Thank you.

Affirmative

The timing chain has fractured and obstructed the oil pickup.

Thank you!

I have fitted the bearings according to the specifications in the provided link, however they are too tight. Engine block code: BBBBA. I suppose it is four green and one yellow.

Does anybody possess the bearing size for the aforementioned item, please?

In the absence of a credible cam sensor signal, the DDE will not initiate injection. Have you verified via the sensor aperture that the cams are moving when the engine is activated?

There is no need for the hostility. I do not question your expertise. I was unaware of the concerns, which is why I am asking these questions first. I have had the vehicle for little more than two years, have driven around 20,000 miles, and have maintained it meticulously; this is the first time it has requested AdBlue.

Thank you, everyone. The text states that "you keep the tank full," however @BENZE220AMG advocates for the contrary. I was unaware of the complexities associated with using AdBlue.

My 2014 C220 D has indicated that I need to replenish the AdBlue. My independent repair technician advised me to add 10 litres, which I have done, and the notice has now disappeared. I purchased an additional 10 litres, since internet sources said that the tank had a capacity of 25 litres. Costco offers an excellent pricing of around £12 for 10 litres. What is the remaining fuel level when the warning message appears? My vehicle lacks the capability to monitor the AdBlue level on the dashboard. I want to avoid overfilling and then dealing with AdBlue spillage that requires extensive cleanup. Assistance would be appreciated.

A filter exists, but it is only accessible during a complete gearbox overhaul, since it is located deep inside, so it is not considered a service item. Each time, you get less than half the required oil; it took me six sump dumps to restore mine to pink on the six-speed gearbox. I would recommend against a power flush. A guy with a nine-speed bicycle claims he extracted an additional litre by elevating the front end during the emptying process. Additionally, check whether it is possible to reset the oil degradation counter. I performed the procedure in the six-speed using my diagnostic instrument, which confirms the presence of fresh oil. Apologies, I have not completed the 9-speed, so I am rather uncertain.

Inexpensive alternative to circumvent it 😉 Obtain a pass and thereafter remove the tape; the issue is partially resolved.