Big Yellow Thermometer Graphic? - MBWorld.org Forums

Oct 17, 2022 | 11:36 AM

Exeat

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Newbie

Joined: Oct 2022

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From: Long Island, NY

2013 E350 4matic 212

Big Yellow Thermometer Graphic?

Hi
Does anyone know what this is? Sometimes it appears when the temp climbs a little and also when the temp drops a little. It frequently disappears after a few minutes of driving. The check engine light was just a loose gas cap. But the yellow thermometer continues appear.

Oct 17, 2022 | 12:20 PM

Fliplegend

Member

Joined: Jul 2020

Posts: 224

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From: NE

S212 E350 Estate

Low coolant.

Oct 18, 2022 | 12:09 AM

S. Madman

Super Member

Joined: Feb 2019

Posts: 681

Likes: 405

From: FL

2012 E550 sedan 2019 E63 Wagon

Without a code there is no way to know. I know when mine had low coolant it would spell it out for me.

That could be the car is not getting warm enough due to a bad thermostat.

Check, and see if an OBD scanner says p0128.

Oct 18, 2022 | 02:45 AM

S-Prihadi

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Joined: May 2018

Posts: 6,635

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From: Jakarta-Indonesia

2014 - W212.065 - E400 ( M276.820, 3 liter Turbo) RWD not Hybrid

Same here, my low coolant level warning is a big TEXT 30% the size of the center display..... one can not miss

Oct 18, 2022 | 05:26 PM

rapidoxidation

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Joined: Jan 2016

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From: In the Shadow of the Tetons

2013 ML350 Bluetec

You might not be getting to operating temperature as quickly as the computer expects. By the same token (bad thermostat) your engine might be getting a little warmer than it expects.
Codes might yield the answer.

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