Mercedes Brake Line Replacement Explained | Why most 2008–2016 Models Need This Repair If you own a 2008–2016 Mercedes (W212/W204), you need to see this. Rear brake line rust is one of the most common failures on Mercedes in salt-belt states. In this reel, we show the full Mercedes rear brake line replacement procedure running new lines from the ABS unit all the way to the rear and explain why this job becomes expensive at the dealer. Dealers charge $3,000–$5,000. Independent Mercedes specialist