The Mercedes C63S W205 fails to start or crank. Dashboard lights illuminated... battery charged!

[MagicPod]

Greetings to all. I am enquiring if anyone is able to assist me.
I possess a 2017 Mercedes C63S, and the other evening, under inclement weather, I undertook a two-hour journey. After traversing several shallow rain puddles, I suddenly saw a red battery warning on my dashboard, accompanied by a significant decrease in vehicle power as I entered the freeway. I drive over to the side and turn off the truck. The vehicle failed to initiate or start once more. Upon returning home and recovering, I charged the battery, but it has made no impact. All the lights and other components appear to be functioning properly, yet the engine fails to start. I am seeing several warnings on the dashboard. Traction control nonfunctional, electronic rear axle differential lock inoperative, etc.


I conducted a cursory examination and obtained several codes.
U010031 There is a fault in the communication with the "combustion engine" control unit. The signal is absent.
U010029 indicates a problem in communication with the "combustion engine" control unit. An incorrect signal exists.

Has anyone experienced something analogous?
Assistance is valued.

[Notef]

It appears to have lost communication with the engine ECU.

Unless you encountered floodwater enough deep to cause hydrolock in the engine....

[MagicPod]

Thank you for your response.
The water was certainly not deep enough to reach the inlet, therefore I am 99% confident that it is not hydrolocked.


The ECU in these vehicles is located underneath and may have had water damage or have compromised wiring beneath it.

[MagicPod]

The identical issue as this individual, although he has not responded with a solution.

[Notef]

It would merely be conjecture on my part; you should consult a somebody proficient in Xentry for assistance.