Is there any recall on the adblue heater? Or what can be done if it fails so frequently.

After washing my car GLK350, I have lost the power on the dashboard, as well as the signals and the functions bottom on the steering wheel.

Please advise and thank you

Dealership said it's the oil cooler. They replaced easily accessible gaskets. It still leaked. Now to replace oil cooler is $4,000 and/or repair the O rings . Insurance company won't cover unless it was directly caused by the accident. Dealership says these things wear out. What is the average life expectancy of a part like this? Could a rear-ended accident caused? Need advice. Thank you. Sabrina