Mercedes-Benz 500SEL Cold Start Injector 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)

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)

Cold Start Injector Replacement Service

How much does a Cold Start Injector Replacement cost?

On average, the cost for a Mercedes-Benz 500SEL Cold Start Injector Replacement is $106 with $11 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1985 Mercedes-Benz 500SELV8-5.0LService typeCold Start Injector ReplacementEstimate$136.55Shop/Dealer Price$159.44 - $188.74
1984 Mercedes-Benz 500SELV8-5.0LService typeCold Start Injector ReplacementEstimate$116.55Shop/Dealer Price$139.47 - $168.79
Show example Mercedes-Benz 500SEL Cold Start Injector Replacement prices

What is the Cold Start Injector all about?

The cold start injector is also known as the cold start valve. The part is located on the cold air intake, which is found on the intake manifold. It is a fuel injector that is controlled electronically. The cold start injector works only when the engine has a cold start, or when the engine’s temperature is below a certain point. When this happens, a computer tells the injector to inject more fuel into the mixture that goes through the cylinders to the engine. The goal is for the engine to have an easier and faster start even when it is cold.

It is important to note that the temperature is referring to that of the engine, not the outside weather. When the cold start injector isn’t working properly, the engine will sound rough and will have trouble idling unless pressure stays on the pedal to increase the amount of fuel that goes into the manifold. The engine may keep dying every time it is started until it warms up enough.

Keep in mind:

  • The cold start injector also helps moderate engine speeds while improving performance and even fuel economy.
  • Another job of the cold start injector is to help control engine idle speed.
  • The cold start injector wires are separate from other injectors and they are often screwed in.
  • The injector can be tested for proper working order.

How it's done:

  • The Cold Start Injector is verified that it needs to be replaced. The electrical connector is then disconnected.
  • The defective Cold Start Injector is unscrewed from the housing and removed.
  • After the new Cold Start Injector is installed and secured into the housing, the fuel line is connected.
  • The electrical connection is then connected and the Cold Start Injector is tested for operation.
  • The vehicle is road tested to ensure proper operation of the Cold Start Injector and checked for leaks.

Our recommendation:

If the engine sounds unusual when idling or if it has trouble starting when it is cold, you should have one of our expert mechanics inspect the cold start injector. The technician can test it with a diagnostic meter to determine the issue.

What common symptoms indicate you may need to replace the Cold Start Injector?

  • Engine won’t start or stalls
  • Engine runs poorly
  • Engine stops when you take your foot off the pedal

How important is this service?

The engine may not start when the cold start injector stops working, so it is important to have it tested before you are stranded.

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)

Rating Summary
5
0
0
0
0
5
0
0
0
0

Theodore

16 years of experience
1604 reviews
Theodore
16 years of experience
Mercedes-Benz 500SEL V8-5.0L - Windows - Seattle, Washington
Theodore was excellent! He was on time and did what he said. He even worked through a hailstorm!!

Theodore

16 years of experience
1604 reviews
Theodore
16 years of experience
Mercedes-Benz 500SEL V8-5.0L - Windows - Seattle, Washington
Excellent service from Theo Arrived on time Explained what he was doing Finished up with review of what he did and anything that needed to be done

Horus

11 years of experience
122 reviews
Horus
11 years of experience
Mercedes-Benz 500SEL V8-5.0L - Power window is noisy - San Antonio, Texas
He knows a lot.

Herman

13 years of experience
86 reviews
Herman
13 years of experience
Mercedes-Benz 500SEL V8-5.0L - Ignition Cable (Spark plug wires) - Miami Beach, Florida
I have used his services twice and both times he has done a great job.

Excellent Rating

(5)

Rating Summary
5
0
0
0
0
5
0
0
0
0
Number of Mercedes-Benz 500SEL services completed
55+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

Symptoms of a Bad or Failing Door Mirror
If a side mirror has its glass broken, cannot be moved or adjusted, or has a heater that is not working, you may need to replace a door mirror.
How to Transfer a Car Title in Texas
Whenever Whenever there is a change of vehicle ownership in Texas, the title must be transferred from the previous owner’s name to that of the current owner. This applies to the buying and selling process, but also to giving a...
How to Lubricate a Driveshaft
CV joints by design do not need regular servicing unless a CV boot has become ripped. Many times it is more cost effective to...

Brake lights not working - 2001 Ford F-250

Hi there. It sounds like you have a bad or broken ground wire. Check around the battery for a possible broken wire. Take some time and clean all the ground wires that you can find, especially under the dash. Over...

Have a 90 mile comute each way own a Hond a odessey any advice? Is thus vehicle reliable?

Hi there. Overall, a Honda Odyssey is a pretty reliable and dependable. In most cases, routine service and maintenance will extend the life of your vehicle significantly. If your car is running rough and depending on the mileage of your...

My 2007 Ford Explorer just started acting up. When I first take off driving it does fine but when it goes to shift into gear, the

It sounds like you are referring to delayed shifting. That can be caused by an inadequate amount of transmission fluid, solenoid faults, faults in internal transmission hydraulic pressure control, engine control faults (e.g., throttle position sensor), and many other types...

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