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On average, the cost for a Mercedes-Benz 500SEL Fuel Pressure Sensor Replacement is $1077 with $811 for parts and $266 for labor. Prices may vary depending on your location.
| Car | Service | Estimate | Shop/Dealer Price |
|---|---|---|---|
| 1992 Mercedes-Benz 500SELV8-5.0L | Service typeFuel Pressure Sensor Replacement | Estimate$1944.91 | Shop/Dealer Price$2399.65 - $3653.62 |
| 1993 Mercedes-Benz 500SELV8-5.0L | Service typeFuel Pressure Sensor Replacement | Estimate$1888.91 | Shop/Dealer Price$2343.74 - $3597.77 |
In fuel-injected and diesel engines, fuel rail pressure sensors monitor the pressure in the fuel rail and report the reading to the engine control module. If any drop in pressure is detected, the engine control module compensates so that the fuel pump can restore the proper pressure. A valve controls this pressure; if the sensor ever fails, you should replace it. Sometimes, the entire fuel rail may need to be replaced, but the sensor is a weak point in the loop that is more prone to damage.
If the sensor is working properly, only the amount of fuel that is needed to make the engine run properly will be delivered. Minimal excess fuel will be circulated back to the tank in the fuel return line.
The fuel rail sensor is not part of a maintenance check, and is only addressed when it fails. If you suspect a problem with your fuel rail sensor or fuel delivery system, have one of our expert mechanics inspect and replace the fuel rail sensor if necessary.
If your fuel rail sensor is faulty, you may experience difficulty starting the engine or poor performance that could cause trouble in traffic. Have a failed fuel rail sensor replaced as soon as possible.
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