Mercedes-Benz 420SEL Crankshaft Position Sensor Replacement at your home or office.

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Crankshaft Position Sensor Replacement Service

How much does a Crankshaft Position Sensor Replacement cost?

On average, the cost for a Mercedes-Benz 420SEL Crankshaft Position Sensor Replacement is $541 with $401 for parts and $140 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1990 Mercedes-Benz 420SELV8-4.2LService typeCrankshaft Position Sensor ReplacementEstimate$957.46Shop/Dealer Price$1164.38 - $1770.95
1991 Mercedes-Benz 420SELV8-4.2LService typeCrankshaft Position Sensor ReplacementEstimate$948.45Shop/Dealer Price$1152.27 - $1756.53
Show example Mercedes-Benz 420SEL Crankshaft Position Sensor Replacement prices

What is the Crankshaft Position Sensor all about?

Many newer cars have computerized engine management systems that rely on sensors to report data to the computer. The crankshaft position sensor is used in conjunction with the camshaft position sensor to control ignition timing and to let the computer know when to inject fuel and provide spark sequence. Due to the mounting locations of this sensor, it is common for heat and oil leaks to cause this sensor to fail.

Keep in mind:

  • Damage to the crankshaft position sensor is sometimes caused by leaking oil, which means there may be another component of your vehicle that needs replacement or repair.
  • The electrical connector can also be damaged, and should be inspected every time the position sensor is replaced.

How it's done:

  • Scan the car for trouble codes.
  • Remove and replace crankshaft position sensor.
  • Clear trouble codes.
  • Check for the proper operation of the car.

Our recommendation:

The crankshaft position sensor will usually let you know when it needs replacing. The Check Engine warning light will illuminate and you may notice that your vehicle has a hard time starting or running smoothly. When you notice any of these signs, schedule an inspection.

What common symptoms indicate you may need to replace the Crankshaft Position Sensor?

  • Car does not start.
  • Check engine light is on.
  • Car misfires (car runs rough).

How important is this service?

The crankshaft position sensor relays critical information to your vehicle’s computer management system. The sensor provides the management system with the information it needs to control ignition timing, and it lets the computer know when it needs to provide sparks and fuel. Without a functioning crankshaft position sensor, the computerized management system doesn’t receive this critical information, and the vehicle will either not start, or will misfire while you’re driving it.

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Excellent Rating

(19)

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Dave

24 years of experience
303 reviews
Dave
24 years of experience
Mercedes-Benz 420SEL V8-4.2L - Oil Change - San Jose, California

Manuel

13 years of experience
140 reviews
Manuel
13 years of experience
Mercedes-Benz 420SEL V8-4.2L - Oil Pressure Sensor Replacement - Naples, Florida
First class service. Knowledgeable and considerate.

Patrick

34 years of experience
1579 reviews
Patrick
34 years of experience
Mercedes-Benz 420SEL V8-4.2L - Car is not starting - Pflugerville, Texas
Very good.

Tien

24 years of experience
903 reviews
Tien
24 years of experience
Mercedes-Benz 420SEL V8-4.2L - Power Window Switch Replacement (Passenger Side Front, Passenger Side Rear) - Oakland, California
Tiens was very nice to work with. He fixed 2 things and ordered parts for other items.

Excellent Rating

(19)

Rating Summary
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1
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18
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Number of Mercedes-Benz 420SEL services completed
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