Automatic Emergency Braking problems of the 2014 Mercedes Benz E350

The failure was when I hit the brakes hard in an emergency braking situation and the car very eratically and violently veered to the left. There was no warning and thank god there was no car coming in the left lane otherwise it would have been a broad side hit. I was doing 55 mph. We had the car inspected at a local shop and the left rear tie rod link was completely severed from the suspension sub-frame because of rust. The brake lines above the sub frame were also severely rusted and leaking. I called my closest dealer and they said the rusted frame replacement is covered under extended warrenty but not the brake lines which had the same issue, severe corrosion and a potential catostrophic failure! mercedes road side assistance was called to tow the car 70 miles to the closest shop.

Vehicle is 9 years old, with 73000 miles. Dealer service has advised that the rear subframe and brake lines are rusting and need to be replaced as a safety issue. Cost quoted was $8800. Mercedes agreed to pick up the cost of the parts and the dealer offered to split the installation cost, bringing my total down to $3150. On-line research reveals this is a common problem across several product lines and has been an issue for 20+ years. Failure at this point could lead to uncontrolled movement of the the rear suspension structure, the rear suspension members, wheels, and electronic sensors in the abs causing loss of control and brake failure.