Is it 95C (which is perfectly normal) or 105C (248F)? Real customer reviews from The service manual indicates the engines thermostat should begin to open at between 88 and 92 degrees Celsius, the normal operating temperature should be 90 to 95 C. The gauge does appear to be high but is normal. Car is running hotter than normal Inspection, Mercedes-Benz ML350 Headlight Switch Replacement, Mercedes-Benz ML350 Brake pressure is uneven Inspection, Mercedes-Benz ML350 Fuel door won't close Inspection, Mercedes-Benz ML350 Fuel Gauge Sender Replacement, Mercedes-Benz ML350 Exhaust fume odor in car Inspection, Mercedes-Benz ML350 Ambient Temperature Sensor (Switch) Replacement, Mercedes-Benz ML350 Loud noises when car is put in gear Inspection, Mercedes-Benz ML350 Camshaft Seal Replacement, Mercedes-Benz ML350 Car Mirror Control Switch Replacement, Symptoms of a Bad or Failing Battery Temperature Sensor, P0289 OBD-II Trouble Code: Cylinder 10 Injector Circuit High, How to Replace a Power Steering Control Valve. My CLK used to do it (coolant level low), but would go out with approx a cup of water added into the header every now and then (my driveway is on a slight slope so I think that added to the problem). Mercedes-Benz SLK280 171.4542006-2008 You will need to remove the two air inlet ducts as well as the front engine cover to get access to the coolant temperature sensor on the front of the engine. Tighten the two bolts and reconnect the radiator hose. The coolant temperature danger point is 120C (248F). It would turn over but not fire at all. this perishes and forms small holes. Without a gauge, though, its anybodys guess as to how high above normal the temperature is or how long its been above normal. Prices may vary depending on your location. Suggest thermostat as your first suspect. You must log in or register to reply here. If there is no place to safely pull over, turn off your radio and other electrical units, and turn your heat on high (this will funnel some of the hot engine air into the cabin). 2001-2002 CL55 AMG 0 helpful. I kust think its weird that its never done that to me until maybe 2 weeks ago, I kust think its weird that its never done that to me until maybe 2 weeks ago. BMW 3.0d six cylinder engines suffer with their stats 'going off' resulting in reduced running temps, this in turn can lead to other problems such as failed DPF regens, leading to expensive bills. I didn't at the time realise it is a magnetic switch so will test again using a magnet to see if resistance changes to less than 5 ohms. Location. JavaScript is disabled. I had the thermostat changed on EmilysMum's Citron C3 the other day. If its low, then the system doesnt have enough fluid to do its job correctly. When the plastic parts of the transmission are worn, the linkage can come apart. BenzWorld.org forum is one of the largest Mercedes-Benz owner websites offering the most comprehensive collection of Mercedes-Benz information anywhere in the world. I got my new 2012 ML350 about $7800 bellow MSRP. While this can vary, in the E320 and C240, for example, the thermostat opens up at 87 degrees Celsius. Its more than weird. The engine creates a great deal of heat, and coolant is circulated throughout to absorb heat, and then remove it. Sticking Thermostat: This could be a sign that your thermostat is about to fail. While there is a small chance that there is an issue with the running temperature of your engine, by far the most common issue with trouble code P0128 is a faulty thermostat. 2003-2005 ML350 This code points to issues with the ECT sensor and high engine coolant temperature. 1999-2006 SL500 The gauge appears to be at approximately 90 degrees Celsius. Mercedes-Benz C300 204.081 / 204.0542008-2011 Get a free detailed estimate for a repair in your area. Ill post a picture when I get into my car and start it. $481. Powered by Discourse, best viewed with JavaScript enabled. They have markings that indicate low and high temperatures. There are many possible reasons that your engine is running hot, including low coolant levels, a clogged or closed thermostat, a failed head gasket or a water pump malfunction. If you look at the header tank the sensor is an insert that screws in from underneath i.e. I have replaced the radiator, water pump and thermostat Im assuming it would be C or am i wrong? The thermostat may also stick open. The cooling system thermostat in the engine begins to open at 88 to 92 degrees Celsius, 95 degrees should be normal operating temperature. jack up front O/S, remove road wheel, remove inner arch and remove washer bottle.
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