Mercedes-Benz GLE400 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 GLE400 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 GLE400V6-3.0L TurboService typeEngine idle speed is high InspectionEstimate$114.99Shop/Dealer Price$124.99 - $132.49
2018 Mercedes-Benz GLE400V6-3.0L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2019 Mercedes-Benz GLE400V6-3.0L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2016 Mercedes-Benz GLE400V6-3.0L TurboService typeEngine idle speed is high InspectionEstimate$94.99Shop/Dealer Price$112.48 - $125.60
Show example Mercedes-Benz GLE400 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

John

27 years of experience
54 reviews
John
27 years of experience
Mercedes-Benz GLE400 V6-3.0L Turbo - Pre-purchase Car Inspection - Stuart, Florida
John W. did an an outstanding job. This is the first time we have used an inspection service and it was an eye-opener. It also gave us a good sense of security closing the deal and knowing that costly surprises were much less likely. I recommend this company and John W. (in the Stuart, FL area) very highly.

Lavell

28 years of experience
265 reviews
Lavell
28 years of experience
Mercedes-Benz ML350 V6-3.5L - Brake Pads Replacement (Front, Rear) - Oakland, California
Excellent job and excellent service!

Mike

27 years of experience
53 reviews
Mike
27 years of experience
Mercedes-Benz ML350 V6-3.5L - Transmission Fluid Service - Atlanta, Georgia
Great job! Car runs like new

Robert

12 years of experience
125 reviews
Robert
12 years of experience
Mercedes-Benz C230 L4-1.8L Turbo - ABS Light is on - Silver Spring, Maryland
Excellent

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

How to Add Radiator Fluid
The radiator is at the heart of your car’s cooling system. This system directs radiator fluid or coolant around the engine’s cylinder...
P0227 OBD-II Trouble Code: Throttle/Pedal Position Sensor/Switch C Circuit Low Input
P0227 P0227 code definition Throttle/Pedal Position Sensor/Switch C Circuit Low Input What the P0227 code means P0227 is a generic OBD-II code indicating that the throttle/pedal position sensor/switch C circuit has a low input problem causing the sensor input to...
Rules of the Road For North Dakota Drivers
Those Those who have a valid driver’s license have already proven that they know the rules of the road in the state in which they drive. Much of that knowledge, especially the laws that are based on common sense, also...

Jeep will crank but won't turn over. Fuel pump running constantly and the ASD replay buzzing and alarm system won't shut off.

Hi there, thanks for your question. I would recommend having the vehicle scanned to see what codes are coming up as this will direct you toward a potential solution. Without knowing what codes may be coming up, some things to...

crack in theromstat housing

Hi there. This is a common problem on this engine. If the housing is cracked then the entire intake manifold needs to be replaced as an assembly. There is no repair that will ensure that it will not leak any...

Car keeps burning out ignition coil, same spot, not spark plug.

Hello There, I would suggest checking the ignition control module. The ignition control module functions in two modes; the start and run modes. When starting the engine, the ignition control module allows full battery voltage to be deployed to the...

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