What is a Coolant Sensor and what happens if it fails to function properly?
The engine coolant temperature (ECT) sensor is a relatively simple sensor that monitors the internal temperature of the engine. Coolant inside the engine block and cylinder head(s) absorbs heat from the cylinders when the engine is running. The coolant sensor detects the change in temperature and signals the Powertrain Control Module (PCM) so it can tell if the engine is cold, warming up, at normal operating temperature or overheating.
The coolant sensor is extremely important because the sensor's input to the PCM affects the operating strategy of the entire engine management system. That's why the coolant sensor is often called the "master" sensor.
Many of the fuel, ignition, emissions and drivetrain functions handled by the PCM are affected by the engine's operating temperature. A different operating strategy is used when the engine is cold than when it is warm. This is done to improve cold driveability, idle quality and emissions. Consequently, if the coolant sensor fails or is giving the PCM a false reading, it can upset a lot of things.
Find your Car:
12 Months Warranty on this part
| Month / Year | Make | Model | Series | Engine Size | Engine Code |
| 2004 on | Chrysler | Crossfire | 3.2L | EGX | |
| 2005 on | Chrysler | Crossfire | SRT-6 | 3.2L S/Charged | EGZ |
| 02-04 | Jeep | Grand Cherokee | Diesel | 2.7L Turbo | ENF |
| 10-97-8/04 | Mercedes Benz | A140 | W168 | 1.4L | M166.940 |
| 1/98-7/01 | Mercedes Benz | A160 | W168 | 1.6L | M166.960 |
| 7/98-2/01 | Mercedes Benz | A170 | W168 Diesel | 1.7L Turbo | M668.940 |
| 9/04 on | Mercedes Benz | A180 | W169 Diesel | 2.0L Turbo | M640.940 |
| 3/99-8/04 | Mercedes Benz | A190 | W168 | 1.9L | M166.990 |
| 9/04 on | Mercedes Benz | A200 | W169 Diesel | 2.0L Turbo | M641.941 |
| 4/05 on | Mercedes Benz | B180 | W245 Diesel | 2.0L Turbo | M640.940 |
| 9/02-2/08 | Mercedes Benz | C180 Kompressor | W203 | 1.8L S/Charged | M271.946 |
| 9/02-2/08 | Mercedes Benz | C200 Kompressor | W203 | 1.8L S/Charged | M271.940 |
| 3/07 on | Mercedes Benz | C200 Kompressor | W204 | 1.8L S/Charged | M271.950 |
| 5/00-2/03 | Mercedes Benz | C220 CDI | W203 Diesel | 2.2L Turbo | M611.962 |
| 3/03-2/08 | Mercedes Benz | C220 CDI | W203 Diesel | 2.2L Turbo | M646.963 |
| 1/07-4/09 | Mercedes Benz | C220 CDI | W204 Diesel | 2.2L Turbo | M646.811 |
| 8/03-5/05 | Mercedes Benz | C230 Kompressor | W203 | 1.8L S/Charged | M271.948 |
| 6/97-4/00 | Mercedes Benz | C240 | W202 | 2.4L | M112.910 |
| 5/00-5/05 | Mercedes Benz | C240 | W203 | 2.6L | M112.912 |
| 12/00-8/04 | Mercedes Benz | C270 CDI | W203 | 2.7L Turbo | M612.962 |
| 6/97-4/00 | Mercedes Benz | C280 | W202 | 2.8L | M112.920 |
| 1/01-1/04 | Mercedes Benz | C32 AMG Kompressor | W203 | 3.2L S/Charged | M112.961 |
| 5/00-5/05 | Mercedes Benz | C320 | W203 | 3.2L | M112.946 |
| 6/05 on | Mercedes Benz | C350 | W203 | 3.5L | M272.960 |
| 11/97-4/00 | Mercedes Benz | C43 AMG | W202 | 4.3L | M113.944 |
| 2/04 on | Mercedes Benz | C55 AMG | W203 | 5.4L | M113.988 |
| 9/99 on | Mercedes Benz | CL500 | W215 | 5.0L | M113.960 |
| 9/99-8/02 | Mercedes Benz | CL55 AMG | W215 | 5.4L | M113.986 |
| 9/02 on | Mercedes Benz | CL55 AMG Kompressor | W215 | 5.4L S/Charged | M113.991 |
| 9/99-8/02 | Mercedes Benz | CL600 | W215 | 5.8L | M137.970 |
| 9/02-8/06 | Mercedes Benz | CL600 | W215 | 5.5L Twin Turbo | M275.950 |
| 9/06 on | Mercedes Benz | CL600 | W216 | 5.5L Twin Turbo | M275.953 |
| 9/02 on | Mercedes Benz | CLK200 Kompressor | W209 | 1.8L S/Charged | M271.940 |
| 10/06 on | Mercedes Benz | CLK200 Kompressor | W209 | 1.8L S/Charged | M271.955 |
| 5/02 on | Mercedes Benz | CLK240 | W209 | 2.6L | M112.912 |
| 6/98-1/03 | Mercedes Benz | CLK320 | W208 | 3.2L | M112.940 |
| 5/02 on | Mercedes Benz | CLK320 | W209 | 3.2L | M112.955 |
| 8/98-4/02 | Mercedes Benz | CLK430 | W208 | 4.3L | M113.943 |
| 5/02 on | Mercedes Benz | CLK500 | W209 | 5.0L | M113.968 |
| 5/99-4/02 | Mercedes Benz | CLK55 AMG | W208 | 5.4L | M113.984 |
| 9/02 on | Mercedes Benz | CLK55 AMG | W209 | 5.4L | M113.987 |
| 6/04 on | Mercedes Benz | CLS500 | W219 | 5.0L | M113.967 |
| 1/05-3/06 | Mercedes Benz | CLS55 AMG | W219 | 5.4L S/Charged | M113.990 |
| 3/02-3/06 | Mercedes Benz | E200 Kompressor | W211 | 1.8L S/Charged | M271.941 |
| 4/06 on | Mercedes Benz | E200 Kompressor | W211 | 1.8L S/Charged | M271.956 |
| 9/97-6/99 | Mercedes Benz | E240 | W210 | 2.4L | M112.911 |
| 6/99-1/03 | Mercedes Benz | E240 | W210 | 2.6L | M112.914 |
| 3/02-3/05 | Mercedes Benz | E240 | W211 | 2.6L | M112.913 |
| 6/99-3/02 | Mercedes Benz | E270 CDI | W210 Diesel | 2.7L Turbo | M612.961 |
| 3/02-3/05 | Mercedes Benz | E270 CDI | W211 Diesel | 2.7L Turbo | M647.961 |
| 6/95-1/03 | Mercedes Benz | E280 | W210 | 2.8L | M112.921 |
| 3/97-6/99 | Mercedes Benz | E320 | W210 | 3.2L | M112.941 |
| 3/02-3/05 | Mercedes Benz | E320 | W211 | 3.2L | M112.949 |
| 6/99-1/03 | Mercedes Benz | E320 CDI | W210 Diesel | 3.2L Turbo | M613.961 |
| 11/02-3/05 | Mercedes Benz | E320 CDI | W211 Diesel | 3.2L Turbo | M648.961 |
| 9/97-3/02 | Mercedes Benz | E430 | W210 | 4.3L | M113.940 |
| 6/04 on | Mercedes Benz | E500 | W211 | 5.0L | M113.967 |
| 9/97-3/03 | Mercedes Benz | E55 AMG | W210 | 5.5L | M113.980 |
| 10/02-3/06 | Mercedes Benz | E55 AMG | W211 | 5.4L S/Charged | M113.990 |
| 11/99-6/05 | Mercedes Benz | ML270 CDI | W163 Diesel | 2.7L Turbo | M612.963 |
| 3/98-7/02 | Mercedes Benz | ML320 | W163 | 3.2L | M112.942 |
| 8/02-6/05 | Mercedes Benz | ML350 | W163 | 3.7L | M112.970 |
| 6/98-7/02 | Mercedes Benz | ML430 | W163 | 4.3L | M113.942 |
| 9/01-6/05 | Mercedes Benz | ML500 | W163 | 5.0L | M113.965 |
| 7/05 on | Mercedes Benz | ML500 | W164 | 5.0L | M113.964 |
| 3/00-6/05 | Mercedes Benz | ML55 AMG | W163 | 5.4L | M113.981 |
| 2/06 on | Mercedes Benz | R500 | W251 | 5.0L | M113.971 |
| 1/99-8/05 | Mercedes Benz | S280 | W220 | 2.8L | M112.922 |
| 10/98-8/02 | Mercedes Benz | S320 | W220 | 3.2L | M112.944 |
| 6/99-8/02 | Mercedes Benz | S320 CDI | W220 Diesel | 3.2L Turbo | M613.960 |
| 9/02-8/05 | Mercedes Benz | S350 | W220 | 3.7L | M112.972 |
| 10/98-8/05 | Mercedes Benz | S430 | W220 | 4.3L | M113.941 |
| 6/00-8/05 | Mercedes Benz | S500 | W220 | 5.0L | M113.960 |
| 9/02-8/05 | Mercedes Benz | S55 AMG Kompressor | W220 | 5.4L S/Charged | M113.991 |
| 8/99-8/05 | Mercedes Benz | S600 | W220 | 5.8L | M137.970 |
| 9/02-8/05 | Mercedes Benz | S600 | W220 | 5.5L Twin Turbo | M275.950 |
| 12/05 on | Mercedes Benz | S600 | W221 | 5.5L Twin Turbo | M275.953 |
| 2/04-8/05 | Mercedes Benz | S65 AMG | W220 | 6.0L Twin Turbo | M275.980 |
| 7/06 on | Mercedes Benz | S65 AMG | W221 | 6.0L Twin Turbo | M275.982 |
| 6/98-8/01 | Mercedes Benz | SL280 | R129 | 2.8L | M112.923 |
| 6/98-8/01 | Mercedes Benz | SL320 | R129 | 3.2L | M112.943 |
| 3/03-12/05 | Mercedes Benz | SL350 | W230 | 3.7L | M112.973 |
| 6/98-8/01 | Mercedes Benz | SL500 | W129 | 5.0L | M113.961 |
| 10/01-12/05 | Mercedes Benz | SL500 | W230 | 5.0L | M113.963 |
| 10/01-12/05 | Mercedes Benz | SL55 AMG Kompressor | W230 | 5.4L S/Charged | M113.992 |
| 1/06 on | Mercedes Benz | SL55 AMG Kompressor | R230 | 5.4L S/Charged | M113.995 |
| 3/03-12/05 | Mercedes Benz | SL600 | R230 | 5.5L Twin Turbo | M275.951 |
| 1/06 on | Mercedes Benz | SL600 | R230 | 5.5L Twin Turbo | M275.954 |
| 9/04 on | Mercedes Benz | SL65 AMG | W204 | 6.0L Twin Turbo | M275.981 |
| 4/04-11/06 | Mercedes Benz | SLK200 Kompressor | W171 | 1.8L S/Charged | M271.944 |
| 12/07 on | Mercedes Benz | SLK200 Kompressor | W171 | 1.8L S/Charged | M271.954 |
| 6/99-3/04 | Mercedes Benz | SLK320 | W170 | 3.2L | M112.947 |
| 6/99-3/04 | Mercedes Benz | SLK32 AMG Kompressor | W170 | 3.2L S/Charged | M112.960 |
| 4/04 on | Mercedes Benz | SLK55 AMG | W171 | 5.4L | M113.989 |
| 4/00-5/06 | Mercedes Benz | Sprinter 208 CDI | W902 Diesel | 2.2L Turbo | M611.987 |
| 4/06 on | Mercedes Benz | Sprinter 209 CDI | W906 Diesel | 2.2L Turbo | M646.984 |
| 4/00-5/06 | Mercedes Benz | Sprinter 308 CDI | W903 Diesel | 2.2L Turbo | M611.987 |
| 4/06 on | Mercedes Benz | Sprinter 309 CDI | W906 Diesel | 2.2L Turbo | M646.984 |
| 4/00-5/06 | Mercedes Benz | Sprinter 311 CDI | W903 Diesel | 2.2L Turbo | M611.981 |
| 4/06 on | Mercedes Benz | Sprinter 311 CDI | W906 Diesel | 2.2L Turbo | M646.985 |
| 4/00-5/06 | Mercedes Benz | Sprinter 313 CDI | W903 Diesel | 2.2L Turbo | M611.981 |
| 10/06 on | Mercedes Benz | Sprinter 315 CDI | W906 Diesel | 2.2L Turbo | M646.986 |
| 4/00-5/06 | Mercedes Benz | Sprinter 316 CDI | W903 Diesel | 2.7L Turbo | M612.981 |
| 9/08 on | Mercedes Benz | Sprinter 316 NGT | W906 LPG | 1.8L S/Charged | M271.951 |
| 4/00-5/06 | Mercedes Benz | Sprinter 413 CDI | W904 Diesel | 2.2L Turbo | M611.981 |
| 2/08-1/10 | Mercedes Benz | Sprinter 415 CDI | W906 Diesel | 2.2L Turbo | M646.986 |
| 4/00-5/06 | Mercedes Benz | Sprinter 416 CDI | W904 Diesel | 2.7L Turbo | M612.981 |
| 4/06 on | Mercedes Benz | Sprinter 511 CDI | W906 Diesel | 2.2L Turbo | M646.985 |
| 10/06 on | Mercedes Benz | Sprinter 515 CDI | W906 Diesel | 2.2L Turbo | M646.986 |
| 9/08 on | Mercedes Benz | Sprinter 516 NGT | W906 LPG | 1.8L S/Charged | M271.951 |
| 2/10 on | Mercedes Benz | Sprinter 516 CDI | W906 Diesel | 2.2L Turbo | M651.955 |
| 2/01-5/06 | Mercedes Benz | Sprinter 616 CDI | W905 Diesel | 2.7L Turbo | M612.981 |
| 9/03-12/07 | Mercedes Benz | Viano | V639 | 3.2L | M112.951 |
| 9/03 on | Mercedes Benz | Viano | V639 Diesel | 2.2L Turbo | M646.982 |
| 6/04-8/07 | Mercedes Benz | Viano | V639 | 3.7L | M112.976 |
| 11/06 on | Mercedes Benz | Viano | V639 Diesel | 2.2L Turbo | M646.980 |
| 4/99-9/03 | Mercedes Benz | Vito 108 CDI | V638 Diesel | 2.2L Turbo | M611.980 |
| 10/03-10/06 | Mercedes Benz | Vito 109 CDI | V639 Diesel | 2.2L Turbo | M646.983 |
| 11/06 on | Mercedes Benz | Vito 109 CDI | V639 Diesel | 2.2L Turbo | M646.980 |
| 11/06 on | Mercedes Benz | Vito 109 CDI | V639 Diesel | 2.2L Turbo | M646.981 |
| 4/99-9/03 | Mercedes Benz | Vito 110 CDI | V639 Diesel | 2.2L Turbo | M611.980 |
| 10/03-10/06 | Mercedes Benz | Vito 111 CDI | V639 Diesel | 2.2L Turbo | M646.982 |
| 11/06 on | Mercedes Benz | Vito 111 CDI | V639 Diesel | 2.2L Turbo | M646.980 |
| 4/99-9/03 | Mercedes Benz | Vito 112 CDI | V638 Diesel | 2.2L Turbo | M611.980 |
| 10/03 on | Mercedes Benz | Vito 115 CDI | V639 Diesel | 2.2L Turbo | M646.982 |
| 11/06 on | Mercedes Benz | Vito 115 CDI | V639 Diesel | 2.2L Turbo | M646.980 |
| 10/03 on | Mercedes Benz | Vito 119 | V639 | 3.2L | M112.951 |
| 6/99-9/03 | Mercedes Benz | Vito 220 CDI | V638 Diesel | 2.2L Turbo | M611.980 |
| 03-04 | Smart | Cabrio | A450 | 698cc Turbo | |
| 03-04 | Smart | City Coupe | C450 | 698cc Turbo | |
| 03-06 | Smart | Fortwo | C450 | 698cc Turbo | |
| 04-05 | Smart | Fortwo | Cabrio A450 | 698cc Turbo | |
| 03-05 | Smart | Roadster | R452 | 698cc Turbo |
Shipment:
Shipments are done on the same day and it takes 3 to 5 business days to arrive to your place
Pick up is available in Black Rock 3193
Warranty:
12 Months warranty is valid on the following conditions:
- The product was installed in a professional manner
- the product was handle and treated under typical circumstances/conditions
- The product was installed by a professional mechanic
- The warranty will be only for the cost of the item, we will not responsible for installation or other fees like labor expenses, towing expenses, additional repair expenses or other related expenses
- The customer provides substantial information about the tests done to the system surrounding the part previous to the installation to ensure the safety of the purchased part
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