Mercedes-Benz S420 Crankshaft Position Sensor Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Estimate price near me

Service Location

Customer Ratings

(13)

Included for free with this service

Online Booking

Mechanic comes to you

12-month / 12k-mile warranty

Free 50 point safety inspection

Our certified mobile mechanics can come to your home or office 7 days a week between 7 AM and 9 PM.

Customer Ratings

(13)

Crankshaft Position Sensor Replacement Service

How much does a Crankshaft Position Sensor Replacement cost?

On average, the cost for a Mercedes-Benz S420 Crankshaft Position Sensor Replacement is $199 with $104 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1999 Mercedes-Benz S420V8-4.2LService typeCrankshaft Position Sensor ReplacementEstimate$322.95Shop/Dealer Price$392.44 - $561.54
1997 Mercedes-Benz S420V8-4.2LService typeCrankshaft Position Sensor ReplacementEstimate$302.95Shop/Dealer Price$372.47 - $541.59
1994 Mercedes-Benz S420V8-4.2LService typeCrankshaft Position Sensor ReplacementEstimate$643.05Shop/Dealer Price$797.60 - $1221.79
1996 Mercedes-Benz S420V8-4.2LService typeCrankshaft Position Sensor ReplacementEstimate$302.95Shop/Dealer Price$372.43 - $541.52
1995 Mercedes-Benz S420V8-4.2LService typeCrankshaft Position Sensor ReplacementEstimate$643.05Shop/Dealer Price$797.62 - $1221.84
1998 Mercedes-Benz S420V8-4.2LService typeCrankshaft Position Sensor ReplacementEstimate$302.95Shop/Dealer Price$372.47 - $541.59
Show example Mercedes-Benz S420 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.

Fast and easy service at your home or office

Backed by 12-month, 12.000-mile guarantee


Meet some of our expert Mercedes-Benz mechanics

Real customer reviews from Mercedes-Benz owners like you.

Excellent Rating

(13)

Rating Summary
12
0
1
0
0
12
0
1
0
0

Whitney

39 years of experience
783 reviews
Whitney
39 years of experience
Mercedes-Benz S420 V8-4.2L - Brake Pads Replacement (Front, Rear) - Palo Alto, California
He is great.

Richard

17 years of experience
141 reviews
Richard
17 years of experience
Mercedes-Benz S420 V8-4.2L - Fan Clutch - Sacramento, California
good guy does the job and easy to talk to very friendly!

Whitney

39 years of experience
783 reviews
Whitney
39 years of experience
Mercedes-Benz S420 V8-4.2L - Fix a Flat Tire (Plug Holes) - Palo Alto, California
It's great.

Tien

23 years of experience
903 reviews
Tien
23 years of experience
Mercedes-Benz S420 V8-4.2L - Water Pump - Moraga, California

Excellent Rating

(13)

Rating Summary
12
0
1
0
0
12
0
1
0
0
Number of Mercedes-Benz S420 services completed
143+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How to Buy a Good Quality Camshaft Position Sensor
The The camshaft position sensor is a vital part of your engine’s ability to function properly. It detects the position, speed, acceleration and deceleration of the camshaft, which regulates the injection of fuel into the engine. In order to make...
Symptoms of a Bad or Failing Air Charge Temperature Sensor
Common signs include a lack of power when accelerating, trouble when starting in cold weather, and a decrease in fuel efficiency.
How to Replace an Oil Pressure Sensor on Most Cars
Oil pressure sensors fail if the sensor light blinks or stays on constantly when the pressure if acceptable or when the gauge is at zero.

New car that is always lighting up ‘check engine’

Hello, thanks for writing in about this issue. No, your car is not a lemon! The Check Engine Light (CEL) is trigged by the engine control unit when it detects a fault with any engine sensor or a calculated engine...

My van was missing and rough idling then I turned it off one day and the next day it starts then dies and some times it won't start

Hello, thanks for writing in about your 2001 Dodge Caravan. For certain, given your mileage and codes for these 2 components, replacing these 2 sensors is the minimum. Cleaning the idle air control valve, throttle body (https://www.yourmechanic.com/services/clean-throttle-body), and PCV valve...

Multiple cylinder misfire detected. Changed the distributor, fuel pressure regulator, injectors and the coil.

Hi there. Check the spark plugs in the engine and see if they have a bold spark. If the spark plugs and wires are old, they can cause the electrical current to flow slower than normal to the cylinder causing...

How can we help?

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.

1 (855) 347-2779 · hi@yourmechanic.com