ska597

I received something in the mail a few days back regarding an extension of the engine thermostat warranty from the traditional 4 yr 50k mile to a now robust 15 yr 150k mile. The extension paperwork states that it’s in response to “concerns that the sealing ring in the engine thermostat could detach, causing a delay in the heating of the engine coolant.” This may also cause the check engine “malfunction indicator lamp or MIL to illuminate. Has anyone else gotten this notice in the mail?

taphil

I did last week.

SilverE5588

Oof , does this cover all 63 m177's , or a specific year only ?

ska597

“On certain model year 2020-2023 C, E, G, GLC, GLE, GLS, GT, S and SL” models equipped with an “eight cylinder engine.” So I guess it could be either the M177 or M178?

SEXYBEAST

had mine replaced last month, covered under warranty