Mercedes-Benz GLE550 Engine idle speed is high Inspection at your home or office.

Our certified mobile mechanics come to you 7 days a week between 7 AM and 9 PM.

Estimate price near me

Service Location

Customer Ratings

(5,670)

How A Diagnostic Works

Instantly book a certified mobile mechanic to come to you

Mechanic diagnoses the problem and quotes necessary repairs

Your vehicle is ready to go

Fair, upfront & transparent pricing for all services

Our certified mobile mechanics can come to you now.

Customer Ratings

(5,670)

Engine idle speed is high Inspection Service

How much does a Engine idle speed is high Inspection cost?

On average, the cost for a Mercedes-Benz GLE550 Engine idle speed is high Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2017 Mercedes-Benz GLE550V8-4.7L TurboService typeEngine idle speed is high InspectionEstimate$114.99Shop/Dealer Price$124.99 - $132.49
2018 Mercedes-Benz GLE550V8-4.7L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2016 Mercedes-Benz GLE550V8-4.7L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
Show example Mercedes-Benz GLE550 Engine idle speed is high Inspection prices

What is engine idle speed and how is it maintained?

Engine idle speed is the speed, measured in revolutions per minute (RPM) an engine is designed to run at when the engine is fully warmed up and the vehicle is stopped in park or neutral. Typically, the idle speed will be set at a value in the range of 600 to 800 RPM, but the exact value will depend on the number of engine cylinders and whether the vehicle is equipped with a manual or automatic transmission. Idle speed is maintained by the throttle body working in conjunction with the vehicle’s powertrain control module.

When to check for idle speed issues:

  • RPM on dash gauge does not match OEM specification. Many cars have RPM gauges. If the engine speed displayed on the gauge does not match the original equipment manufacturer (OEM) specification on the underhood label, there is probably something wrong.
  • Engine is idling higher than normal. If there is no RPM gauge but the engine sounds like it is turning faster when idle, a mechanic can use an instrument to measure the actual engine speed.
  • Harsh engagement in drive. If the idle speed is too high, the vehicle will jump forward when placed in drive.
  • Excessive brake effort is required to hold vehicle at a stop. If idle speed is normal, only a very light force on the brake pedal will be necessary to prevent forward motion in drive.

How do mechanics adjust or repair incorrect idle speed?

The repair procedure depends on the exact cause of the high idle. The below lists common causes of high idle and in each case, the appropriate vehicle system, components, and parts involved would be inspected, removed for repairs, and/or replaced as needed.

Faulty Fuse: In the majority of vehicles, engine idle speed is controlled via an idle control valve (ICV). A faulty or blown fuse in other electronically controlled systems can cause the Idle Air Control (IAC) motor to malfunction, leading to a higher than normal engine idle speed.

Faulty Idle Air Control Valve (ICV): Some cars are equipped with an idle air control valve to maintain idle speed. This part can malfunction due to excessive carbon buildup in the intake manifold.

Vacuum Leak: On any engine, a vacuum leak will cause a high engine idle as the oxygen sensor detects lean operation and the engine computer then tries to compensate, which can result in abnormal idle. Malfunctioning Throttle: A malfunctioning throttle system can cause both a high or low idle as well as an engine stall. A dirty air intake or cracked air intake tube is often the culprit. Computer Malfunction: If the powertrain control module is malfunctioning, idle speed may be affected.

Is it safe to drive with incorrect idle speed?

No. High idle speed could make your vehicle difficult to control and were the idle speed to suddenly and unexpectedly increase to really high levels, you could experience unintended acceleration. Even moderately high idle speed, that is up to 1,200 RPM will make it more difficult to slow your vehicle when stopping and, once stopped, there remains the risk of your foot coming off the brake and the car jumping ahead. High idle speed also wastes gas and can be distracting as the vehicle does not perform as expected.

When addressing idle speed issues, keep in mind:

  • Related functions, such as the idle up function when the air conditioner is turned on, will be inspected by a mechanic during the repair of a high idle problem.
  • Prior to replacing parts, such as the throttle body, the mechanic will also need to rule out electrical causes of incorrect idle speed as well as physical causes such as vacuum leaks.

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

(5,670)

Rating Summary
5,278
191
54
28
119
5,278
191
54
28
119

Lavell

28 years of experience
265 reviews
Lavell
28 years of experience
Mercedes-Benz S500 V8-5.0L - Battery - Oakland, California
- Overall great service - extremely timely - respectful - would definitely repeat service

Keith

18 years of experience
374 reviews
Keith
18 years of experience
Mercedes-Benz GLK350 V6-3.5L - Cabin Air Filter Replacement - Kissimmee, Florida
Very knowledgeable and explains things thoroughly. He did a great job. Will always recommend

Scott

36 years of experience
913 reviews
Scott
36 years of experience
Mercedes-Benz ML550 V8-5.5L - Control Arm Assembly Replacement (Front Upper Left, Front Upper Right) - Scottsdale, Arizona
He did an excellent job I would highly recommended him If I require service in the future I Will request Scott

Scott

36 years of experience
913 reviews
Scott
36 years of experience
Mercedes-Benz S400 V6-3.5L Hybrid - Check Engine Light is on - Chandler, Arizona
On time. Quick diagnostics.

Excellent Rating

(5,670)

Rating Summary
5,278
191
54
28
119
5,278
191
54
28
119
Number of Mercedes-Benz services completed
62370+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

Is It Dangerous to Buy a Car with Aftermarket Parts Installed?
It's It's not always possible or practical to buy or lease a new car. Sometimes, you're faced with having to purchase a used automobile. While this process may seem straightforward, searching for the right used car is a lot different...
P0179 OBD-II Trouble Code: Fuel Composition Sensor Circuit High Input
P0179 P0179 code definition Fuel Composition Sensor Circuit High Input What the P0179 code means P0179 is a generic OBD-II code that is triggered by high input from the diesel fuel sensor, typically indicating a shorted circuit in the sensor....
How to Get an EPA License as an Automotive Technician
Automotive technician jobs require an EPA certification to learn how about the environment while repairing automotive air conditioning systems.

Transmission slipping.

There are a multitude of reasons why and automatic transmission will slip. It is possible that a bad speed sensor (https://www.yourmechanic.com/services/transmission-speed-sensor-replacement) could cause the transmission to slip. However, it is also possible that a slipping transmission can cause sensor codes...

How do I know if my tie rod is bad

When the tie rod end (https://www.yourmechanic.com/article/symptoms-of-a-bad-or-failing-tie-rod-end) starts to wear, it's commonly due to excessive abuse (like driving on bumpy roads or being hit by blunt objects like curbs and pot holes). Frequently, the part that wears out in the tie...

I drove with the emergency brakes on. What went wrong?

Since you didn't actually go down the road with your Parking Brake on, I doubt there was a lot of damage caused, but an inspection of the system must be done to make sure. The problem with your steering is...

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