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

Our certified mechanics come to you・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Logo-yelp
CUSTOMERS LOVE US ON YELP
4.5 out of 5 (550 reviews)
Icon-warranty_badge-02
SERVICES BACKED BY OUR
12-Month, 12,000-Mile Warranty
How does YourMechanic work?    
Icon-quote-hiw
Get a quote

Choose from 600+ repair, maintenance, and diagnostic services, backed by our 12-month, 12,000-mile warranty.

Icon-calendar-hiw
Book an appointment

Tell us when to meet you at your home or office. We’ll send one of our vetted, top-rated mechanics.

Icon-fixed-hiw
Get your car fixed

Continue with your day while our mechanic fixes your car onsite. You pay only after the job is done.

Camshaft Position Sensor Replacement Estimate for Mercedes-Benz S420

Mercedes-Benz S420 Camshaft Position Sensor Replacement costs $196 on average. Following is a breakdown of the labor and parts estimates.

YourMechanic Price
$146 to $230
Labor: $70 -$80
Parts: $76 -$150
Average Dealer price
$244 to 394
Average Shop price
$178 to 271
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1999 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$370.74Shop/Dealer Price$471.34 - $715.95
1997 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$370.74Shop/Dealer Price$471.46 - $716.16
1995 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$221.36Shop/Dealer Price$284.65 - $417.26
1998 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$370.74Shop/Dealer Price$471.41 - $716.08
1996 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$370.74Shop/Dealer Price$471.35 - $715.98
1994 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$221.36Shop/Dealer Price$284.60 - $417.17
Show example Mercedes-Benz S420 Camshaft Position Sensor Replacement prices

Camshaft Position Sensor Replacement Service & Cost

What is the Camshaft Position Sensor all about?

The camshaft position sensor monitors the position of the camshaft and reports that data to the car’s onboard computer system. This computer system works with sensors and other devices to keep the engine running. With data from the camshaft position sensor (CPS), the fuel injectors know when to fire.

When the sensor malfunctions, the computer does not know when to fire the injectors and may not fire them at all. The faulty readouts may also throw off spark timing, which will affect the car’s fuel economy. This sensor is used in conjunction with the crankshaft position sensor to control ignition timing. It is common for heat and oil leaks to cause this sensor to fail, due to where the sensor is located.

Keep in mind:

  • Damage to the camshaft position sensor is often caused by oil leaks; if this is the case, you may need another part of your car replaced or repaired.
  • When the camshaft position sensor is replaced, the alignment of the timing belt should be monitored so that no fluids leak onto the position sensor mounting area.
  • Some camshaft position sensors will need to have their software updated when they are installed.
  • Timing belts, mass air flow sensors, and crankshaft position sensors can all trigger the trouble code for the camshaft position sensor.

How it's done:

  • Scan test computer for trouble codes.
  • Pinpoint tests as per flow charts.
  • Remove and replace Crankshaft Position Sensor.
  • Clear trouble codes.
  • Check for proper operation and test drive car.

Our recommendation:

The camshaft position sensor isn’t checked in most regular services, but your vehicle has warning signs for when the sensor begins to fail. Because it sends information to the camshaft, when the sensor begins to fail your engine will begin to have trouble. Your engine may have a hard time turning on, staying on, idling, or running smoothly. Your Check Engine warning light should illuminate as well.

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

  • Car stalls or does not start.
  • Car struggles to accelerate (does not maintain speed).
  • Check Engine light is on.
  • Car misfires.
  • Car stumbles or sputters on startup.
  • Car runs poorly or runs rough.

How important is this service?

The camshaft position sensor provides valuable information about the camshaft position to the computer management system. The computer system uses the information from the position sensor to determine when to inject more fuel. Without the sensor’s information, the computer won’t inject fuel properly, and your vehicle will stall or sputter.

Fast and easy Camshaft Position Sensor Replacement service at your home or office.

GET A QUOTE FOR YOUR CAR
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.

505 reviews
Lucas
13 years of experience
Great Service over all!! Will definitely use him again. I will request him and refer him to all my friends!
2014 MERCEDES-BENZ C250 - OIL CHANGE
273 reviews
Allen
32 years of experience
Did a very good job and fix the problem, would highly recommend.
2003 MERCEDES-BENZ SL500 - FUEL PUMP REPLACEMENT
157 reviews
Rusty
19 years of experience
Very nice to work with and knowledgeable
2009 MERCEDES-BENZ C300 - CAR THERMOSTAT REPLACEMENT
122 reviews
Steven
17 years of experience
After moving to a new city I needed a new mechanic. I was set up with Steven who came to a dealership to meet me and inspect a used Mercades I was interested in. He was very genuine about his review of the car along with being highly experienced. It seemed like he truly cared about me and my purchase unlike past experiences. Steven was just an overall nice guy who I knew I could trust off the bat and I will continue to use him from YourMechanic in the future. Thanks for making this completely hassle free and providing a great report of my new cars health.
2010 MERCEDES-BENZ C300 - PRE-PURCHASE CAR INSPECTION
Get an instant quote for your car
Our mechanics come to you ・Backed by 12-month, 12,000-mile guarantee・Fair and transparent pricing
Get a quote
CarServiceYourMechanic PriceShop/Dealer Price
1999 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$370.74Shop/Dealer Price$471.34 - $715.95
1997 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$370.74Shop/Dealer Price$471.46 - $716.16
1995 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$221.36Shop/Dealer Price$284.65 - $417.26
1998 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$370.74Shop/Dealer Price$471.41 - $716.08
1996 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$370.74Shop/Dealer Price$471.35 - $715.98
1994 Mercedes-Benz S420V8-4.2LService typeCamshaft Position Sensor ReplacementYourMechanic Price$221.36Shop/Dealer Price$284.60 - $417.17
Show example Mercedes-Benz S420 Camshaft Position Sensor Replacement prices

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.

1-800-701-6230 · hi@yourmechanic.com