Mercedes-Benz S450 Neutral Safety Switch 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

(5,576)

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

(5,576)

Neutral Safety Switch Replacement Service

How much does a Neutral Safety Switch Replacement cost?

On average, the cost for a Mercedes-Benz S450 Neutral Safety Switch Replacement is $233 with $138 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2010 Mercedes-Benz S450V8-4.7LService typeNeutral Safety Switch ReplacementEstimate$391.39Shop/Dealer Price$470.49 - $685.29
2011 Mercedes-Benz S450V8-4.7LService typeNeutral Safety Switch ReplacementEstimate$371.39Shop/Dealer Price$450.51 - $665.32
2008 Mercedes-Benz S450V8-4.7LService typeNeutral Safety Switch ReplacementEstimate$371.39Shop/Dealer Price$450.51 - $665.32
2009 Mercedes-Benz S450V8-4.7LService typeNeutral Safety Switch ReplacementEstimate$371.39Shop/Dealer Price$450.49 - $665.28
Show example Mercedes-Benz S450 Neutral Safety Switch Replacement prices

What is the Neutral Safety Switch all about?

The neutral safety switch keeps the vehicle from starting when in any gear position other than Park or Neutral. In some vehicles, the switch also monitors gear selection and reverse light feedback data for the vehicle’s computer. Most often mounted to the left-hand side of the transmission, the switch is equipped in vehicles with a transaxle or automatic transmission. Some vehicle neutral safety switches are attached to the shifter mechanism.

Keep in mind:

  • Connected to the starter solenoid, the neutral safety switch completes the starter circuit, allowing the power from the battery to reach the starter only while the gearshift remains in Park or Neutral.
  • The mechanic will check the other systems in your vehicle’s ignition system, such as the starter, battery, and alternator, to make sure those parts are not causing the problem.
  • As a vehicle ages, the neutral safety switch deteriorates.

How it's done:

  • The vehicle is raised and supported on jack stands. The transmission shift lever and cable are removed. The electrical connector is removed from the switch.

  • The neutral safety switch is removed from the transmission. The transmission shaft seal is checked for leaks and replaced as needed.

  • The new neutral safety switch is installed on to the selector shaft and secured while aligning for proper installation alignment.

  • The shift lever and shift cable are reinstalled. The vehicle is checked for proper neutral safety switch operation before the vehicle is lowered off the jack stands.

  • The vehicle is scanned for codes and proper switch indication of gear ranges and road tested for proper operation.

Our recommendation:

Replace a faulty neutral safety switch as soon as possible; otherwise, the vehicle will stop working or suffer engine damage. When the switch does not work properly, the vehicle might jump into gear upon startup. This not only causes damage to the engine itself, but poses a great physical threat to surrounding objects and people. Our expert mechanics will diagnose the neutral safety switch to see if it needs adjustment.

Transmissions that exhibit excessive vibrations cause the switch to go out of alignment over time, which makes vehicle ignition more difficult. When inspecting the neutral safety switch, our expert mechanics check for dirt and grease build-up, moisture, and corrosion. They will also use a test light to confirm a connection through the switch to the starter solenoid.

What common symptoms indicate you may need to replace the Neutral Safety Switch?

  • Engine turns over in any gear, indicating that the neutral safety switch does not work properly and needs replacement
  • Vehicle doesn’t turn over when in Park or Neutral
  • Check Engine Light turns on after ignition

How important is this service?

Replace a faulty neutral safety switch promptly, as driving without a functional switch presents a danger to other drivers, passengers, and those around the vehicle. A faulty neutral safety switch damages the engine, as the vehicle jerks into gear upon startup. The reverse lights could stop working on some vehicles, which creates a safety hazard especially during inclement weather or nighttime.

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

(5,576)

Rating Summary
5,188
189
54
28
117
5,188
189
54
28
117

Kenneth

20 years of experience
781 reviews
Kenneth
20 years of experience
Mercedes-Benz S450 V6-3.0L Turbo - Pre-purchase Car Inspection - Los Angeles, California
Kenneth is very friendly and easy to work with.

Ricardo

14 years of experience
339 reviews
Ricardo
14 years of experience
Mercedes-Benz S450 V6-3.0L Turbo - Pre-purchase Car Inspection - Culver City, California
Ricardo is very trustworthy, responsible, on time for the service , and fast reply.

Marco

29 years of experience
226 reviews
Marco
29 years of experience
Mercedes-Benz 420SEL V8-4.2L - Neutral Safety Switch - Riverside, California
A life-saver

Shawn

12 years of experience
291 reviews
Shawn
12 years of experience
Mercedes-Benz E320 V6-3.2L - Oil Change - Norristown, Pennsylvania
Shawn is a knowledgeable Mechanic, knows is cars very well Great communicator over all a great person.

Excellent Rating

(5,576)

Rating Summary
5,188
189
54
28
117
5,188
189
54
28
117
Number of Mercedes-Benz services completed
61336+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How a Manual Transmission Works
A A manual transmission helps a vehicle achieve a desired speed through the use of gears, a clutch, and a shifter. It works like this: when the driver wants to shift gears, he or she pushes in the clutch pedal...
How to Use a Hair Dryer to Remove a Dent
You can use a hair dryer to fix a dent in your car body. Use the dryer to heat the area, then apply dry ice to fix the damage on your car.
The Guide to Right-of-Way Laws
One One of the most important facets of being a safe driver is understanding right-of-way laws. Right-of-way laws are the laws that govern who gets priority of the road, and who gets to go first when two drivers (or a...

Starter not turning

Hi there. If you hear a click, then the first thing I typically do is find where that click is coming from. Most of the time, the clock is the starter trying to engage but it is unable to crank...

Hit a curb and coilover is rubbing tire.

You most likely bent the wheel spindle or strut [https://www.yourmechanic.com/services/strut-assembly-replacement] causing the top of the wheel to bend in toward the strut spring. You should have the wheel, strut, lower control arm and spindle to identify what component get damaged....

transmission

Hi Bernie. Thanks for contacting us today. To be honest, the first thing I would suspect is that whoever is completing the installation is either forgetting a step or a few as being the reason that three reverse gears have...

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 (844) 997-3624 · hi@yourmechanic.com