What Are Toggle Switches and How Are They Used in Cars? the 3 relays are at the bottom,under the fans. If your engine is overheating occasionally, the problem may be with the coolant temperature sensor. Completing the CAPTCHA proves you are a human and gives you temporary access to the web property. How Long Does a Coolant Temperature Switch (Sensor) Last? Step 12: Verify the radiator drain plug has been tightened. Your IP: 87.238.192.70 P0115 MERCEDES-BENZ Meaning This fault code is stored in the Engine Control Module when the output from the engine coolant temperature sensor is not as expected or missing.The engine control module uses information from the intake air temperature sensor and engine oil temperature sensor to carry out a plausibility check on the signal. Theodore was on time and very helpful when answering my questions. Do not jack up a vehicle on a driveway or incline. The result will be more black smoke being expelled from the exhaust port of the cylinder head and out the tail pipe. Step 6: Replace drain plug. Make sure you consult with your manufacturer or purchase a service manual for the make and model of your vehicle for precise location and instructions. Coolant Temperature Sensor Replacement Cost. 1998 Mercedes ML320 just had AAM and fuse box replaced. Add new coolant, mixed with distilled water as recommended by your specific vehicle manufacturer. Fill with coolant and restart the engine to ensure the light comes off. Your OBD II port where you plug in the scanner is located under the dash, usually right under the steering wheel. The actual process of replacing the coolant temperature sensor is extremely simple. On a longer drive the temperature gauge would fluctuate quickly from normal to 90 degrees, then down to 75, then slowly back again, sometimes 20-30 minutes apart. RockAuto ships auto parts and body parts from over 300 manufacturers to customers' doors worldwide, all at warehouse prices. When the fuel mixture is rich (meaning more fuel than air in the vapor inside the combustion chamber) the cylinder will not be able to burn all the fuel. Step 5: Drain the radiator. The vehicle uses the headlight leveling system to make sure the vehicle's headlights shine as far and as safely as possible. I think I know but is the coolant temperature sensor located about 4" towards passenger side along same housing as the thermostat? Be proactive by adding some to the coolant reservoir to reduce the potential of air bubbles in the coolant lines. Please see our, Volkswagen Touareg - Check Cooling System - Lynnwood, Washington. The best way to complete any road test is to have a planned route that will bring your engine to proper operating temperature and open the thermostat of your radiator. Once the coolant temperature sensor has been replaced, you need to start the engine, check for leaks, and refill the radiator fluid in most cases before you test drive the vehicle. Once the vehicle has been raised and you've opened the hood, the next step is to remove the radiator cap and coolant reservoir cap. You may need to download version 2.0 now from the Chrome Web Store. He needed parts that were not available so he made an appointment that fits both of our schedules to come back. Where is the engine coolant temperature sensor and the fuse located in a Mercedes ML 270 cdi Auto 2002 model please December 13, 2017 Followup from the Pelican Staff: We don't have that model in the US, so I don't have repair info for it. (P0135) The code means that there is a problem with the heater element circuit of the heated oxygen sensor. The side effect of this reaction is that the fuel economy will drastically be cut. Step 4: Test drive the vehicle. This in turn triggers the ECM to either add more fuel or reduce air mixture to create a ârichâ situation, designed to cool the cylinders and reduce the potential of overheating. © Get Yours Today! Our service team is available 7 days a week, Monday - Friday from 6 AM to 5 PM PST, Saturday - Sunday 7 AM - 4 PM PST. P0128 – Coolant temperature below Thermostat Regulating temperature fault code. One of them is a petcock, which is located on the left side of the radiator near the main drain plug (on most vehicles).
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