Rear Subframe "Extended Warranty" Thread
#51
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Join Date: Dec 2023
Location: Gloucester, England
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CLS350
Sub Frame corroded
Good morning! Thank you so much for posting this! I bought a 2013 CLS 350 in April this year. It has full MB service history etc and I have bought the service plan. It went in for an MOT yesterday (58,250 miles) and the report outlines corrosion of the front brake pipes on both sides, as well as the rear sub-frame being corroded although 'not seriously weakened'. These two issues seem not to have been picked up in the last MOT in January 2023 which was also done at a MB dealership. I am assuming / hoping, that based on the thread and the info above, that I have the right to expect for MB to repair the sub frame issue? I am unsure about the brake pipe corrosion as that may be classed as wear and tear, but would appreciate your guidance please. It is having four new tyres next week and I will ask this garage to check the brake pipe corrosion as well as the sub frame. They have also outlined as a minor defect, 'anti-roll bar joint dust cover severely deteriorated' which I notice has been discussed in another thread. I will probably ask another garage to replace these. Your advice is very much appreciated here. I am UK based. TIA
Last edited by Scolly; 12-30-2023 at 05:29 AM.
#52
Super Member
Look up the actual verbiage in the MB notice on the subframe. IIRC, it requires the rust to have perforated the subframe before it can be replaced under warranty. Sorry I don't recall the details specifically, but I live in Arizona, and would expect my subframe to rust through sometime after the sun burns out. ;-)