Mercedes-Benz SL550 When I slow down and stop the car, engine shuts off 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

(36)

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

(36)

When I slow down and stop the car, engine shuts off Inspection Service

How much does a When I slow down and stop the car, engine shuts off Inspection cost?

On average, the cost for a Mercedes-Benz SL550 When I slow down and stop the car, engine shuts off Inspection is $95 with $0 for parts and $95 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
2010 Mercedes-Benz SL550V8-5.5LService typeWhen I slow down and stop the car, engine shuts off InspectionEstimate$114.99Shop/Dealer Price$132.49 - $145.62
2014 Mercedes-Benz SL550V8-4.7L TurboService typeWhen I slow down and stop the car, engine shuts off InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2016 Mercedes-Benz SL550V8-4.7L TurboService typeWhen I slow down and stop the car, engine shuts off InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2019 Mercedes-Benz SL550V8-4.7L TurboService typeWhen I slow down and stop the car, engine shuts off InspectionEstimate$94.99Shop/Dealer Price$104.99 - $112.48
2012 Mercedes-Benz SL550V8-5.5LService typeWhen I slow down and stop the car, engine shuts off InspectionEstimate$94.99Shop/Dealer Price$112.55 - $125.72
2015 Mercedes-Benz SL550V8-4.7L TurboService typeWhen I slow down and stop the car, engine shuts off InspectionEstimate$94.99Shop/Dealer Price$105.01 - $112.52
2018 Mercedes-Benz SL550V8-4.7L TurboService typeWhen I slow down and stop the car, engine shuts off InspectionEstimate$99.99Shop/Dealer Price$109.87 - $117.28
2020 Mercedes-Benz SL550V8-4.7L TurboService typeWhen I slow down and stop the car, engine shuts off InspectionEstimate$99.99Shop/Dealer Price$110.24 - $117.94
Show example Mercedes-Benz SL550 When I slow down and stop the car, engine shuts off Inspection prices

Your car is designed to run like a well-oiled machine, but sometimes that machine struggles in unexpected places. There’s not always a warning light to alert you of this, but sometimes your car will be driving fine at road speed, only to die when you slow down and stop. If your engine shuts off at low speed, contact a mechanic immediately for a thorough inspection.

Common reasons for this to happen:

  • Malfunctioning transmission: In a car with an automatic transmission, the torque converter takes the place of the manual clutch and is responsible for transmitting power. If the torque converter is broken, or if there is a low fluid level in the transmission, the converter will not do its job, and the car will be unable to maintain power at low speeds, which causes the engine to shut off. A defective TCS or torque converter solenoid can also cause this issue.

  • Low fuel pressure, dirty or defective fuel injectors, or broken fuel pump: The fuel pump is responsible for transferring fuel from the tank to the engine. A malfunctioning fuel pump can result in low fuel pressure, which means that there is an inconsistent stream of fuel to the engine. At high speeds this doesn’t matter as much, but at low speeds a temporary pause in the fuel stream is enough to kill the engine. The fuel injectors are responsible for spraying a measured amount of fuel that is ignited by the spark plugs at the proper time. Injectors can become clogged or dirty over time resulting in erratic spray or no spray at all.

  • Bad oxygen sensor or mass flow sensor: The oxygen sensors and mass flow sensor determine how much oxygen is entering the fuel stream, and helps the vehicle adjust the air-to-fuel ratio. If there is too much or too little oxygen, your vehicle will not have optimal power. Just like with low fuel pressure, the car will continue to operate at driving speeds, but this suboptimal power won’t be able to fuel the vehicle as it slows down.

  • Loose or corroded wires in wiring harness: An inconsistently firing ignition will result in an easily stalled engine. If the wires don’t have consistent, constant, and reliable connection with the ignition circuit, the vehicle can lose voltage quickly, and it won’t have the power it needs to keep running as you slow down.

  • Faulty idle air control actuator: The idle air control actuator controls the engines RPMs when it is idling. This actuator receives information from the electronic control unit (ECU) so it knows at what RPM to keep the engine for a smooth and safe idle. When the actuator malfunctions, the engine gets no signal for idling speed and stops working.

  • Clogged or restricted EGR Valve: If your EGR valve is clogged, dirty, or defective it can cause your car to stall, idle erratically, or sputter, depending on whether it is stuck open or closed.

What to expect:

A top-rated mobile mechanic will come to your home or office to determine the source and cause of the stalling condition, and will then provide a detailed inspection report that includes the scope and cost of the necessary repairs.

How it's done:

The mechanic will likely need to test drive your vehicle to see if the problem can be replicated and will listen to the engine at idle to identify any misses, backfires, or other unusual noises. Next, the mechanic will use a scan tool to access the engine control unit or transmission control computer to find any information on stored codes.

Based on the engine performance, test drive and the diagnostic information, the mechanic will pinpoint where the issue is coming from, and let you know what parts need to be replaced or cleaned. Please be aware that this make take some time as oftentimes multiple items have the ability to cause this issue and the mechanic will often have to disassemble and inspect several parts before he or she can make a proper diagnosis.

How important is this service?

If you notice your vehicle stalling when you slow down and stop, park the car in a safe place and book a mechanic to perform an inspection as soon as possible. It is unsafe to continue driving under this condition and could result in further damage to your vehicle.

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

(36)

Rating Summary
35
0
0
1
0
35
0
0
1
0

Cody

8 years of experience
99 reviews
Cody
8 years of experience
Mercedes-Benz SL550 V8-5.5L - Headlight Bulb Replacement (Driver Side Low Beam) - Fort Worth, Texas
Cody was great. He was on time and completed the job quickly. I'd would have him work on my car anytime! Thanks.

Chris

22 years of experience
2247 reviews
Chris
22 years of experience
Mercedes-Benz SL550 V8-5.5L - Car Battery Replacement - Laguna Niguel, California
Very professional, timely, knowledgeable, and courteous. He went the extra mile to ensure my car was ready for the road again.

Samuel

25 years of experience
30 reviews
Samuel
25 years of experience
Mercedes-Benz SL550 V8-5.5L - Brake Light Switch - Memphis, Tennessee
Good mechanic and good guy Would use again

Robert

12 years of experience
125 reviews
Robert
12 years of experience
Mercedes-Benz SL550 V8-4.6L Turbo - Windshield Washer Pump Replacement (Front) - Boyds, Maryland
Details oriented, dedicate, excellent service, best mechanic. Good job Robert, thanks

Excellent Rating

(36)

Rating Summary
35
0
0
1
0
35
0
0
1
0
Number of Mercedes-Benz SL550 services completed
396+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
1100+
experts on our platform

Recent articles & questions

How to Check If Your Car Has Recalls
Although Although automobile manufacturers take many precautions to ensure the safety of the vehicles they sell, defects do sometimes escape initial notice. Whether these defects arise as the result of insufficient testing of new technology or from a substandard batch...
Child Seat Safety Laws in Minnesota
In In the state of Minnesota, there are regulations in place that are designed to protect children when they are travelling in motor vehicles. These laws regulate the use and installation of child safety seats, and they must be obeyed...
P001A OBD-II Trouble Code: "A" Camshaft Profile Control Circuit/Open
P001A means the camshaft and crankshaft signals have malfunctioned which may cause a poorly running engine, reduced power or a no-start condition.

Engine idle fluctuates and dies.

This may be a couple of different things. Your truck has what is called a throttle position sensor. The throttle position sensor (https://www.yourmechanic.com/services/throttle-position-sensor-replacement) is a sensor used to monitor the throttle position of the throttle plate inside the throttle body...

How do i disconnect my alarm system

Hello. You should be able to turn the alarm off by placing the key into either the trunk, the driver door, or the ignition switch. Locking then unlocking the door should cause alarm to go off, or attempting to start...

Why does my car keep jerking and trying to shut off

This problem of erratic idle speed is often referred to as "surging" or "hunting". The causes include a faulty idle air control valve or circuit (IAC), a faulty ECM (not common), faults in the fuel pump control circuit, defective spark...

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