CL-Class (W216) 2007-Present: CL 500, CL 600

Thermostat change on the M273 engine.

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Old 02-04-2019, 05:26 PM
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2010 CL550
Thermostat change on the M273 engine.

on my way to work this morning my check engine light came on. the common p0128 error, indicating a failing thermostat. relatively cheap part. my question is this..i noticed on the older 550 engines, attached to the thermostat is a nice, easily movable radiator hose..attached to my m273 engine, is some stupid clunky huge metal tube, that makes any work in that area basically impossible. What purpose does it serve? can i just get rid of that and use the old style radiator hose?

Last edited by COUPCONNOISSEUR; 02-04-2019 at 05:28 PM.
Old 04-25-2019, 10:47 AM
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'07 GL320CDI, '10 CL550
The metal "tube" is standard with 4Matic cars.

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