Mercedes-Benz SL600 EGR Vacuum Modulator Replacement at your home or office.

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EGR Vacuum Modulator Replacement Service

How much does a EGR Vacuum Modulator Replacement cost?

On average, the cost for a Mercedes-Benz SL600 EGR Vacuum Modulator Replacement is $201 with $96 for parts and $104 for labor. Prices may vary depending on your location.

CarServiceEstimateShop/Dealer Price
1995 Mercedes-Benz SL600V12-6.0LService typeEGR Vacuum Modulator ReplacementEstimate$318.91Shop/Dealer Price$386.27 - $545.02
1994 Mercedes-Benz SL600V12-6.0LService typeEGR Vacuum Modulator ReplacementEstimate$296.91Shop/Dealer Price$364.30 - $523.08
1999 Mercedes-Benz SL600V12-6.0LService typeEGR Vacuum Modulator ReplacementEstimate$296.91Shop/Dealer Price$364.30 - $523.08
2011 Mercedes-Benz SL600V12-5.5L TurboService typeEGR Vacuum Modulator ReplacementEstimate$296.91Shop/Dealer Price$364.25 - $523.00
2000 Mercedes-Benz SL600V12-6.0LService typeEGR Vacuum Modulator ReplacementEstimate$296.91Shop/Dealer Price$364.33 - $523.13
2002 Mercedes-Benz SL600V12-6.0LService typeEGR Vacuum Modulator ReplacementEstimate$296.91Shop/Dealer Price$364.30 - $523.08
2004 Mercedes-Benz SL600V12-5.5L TurboService typeEGR Vacuum Modulator ReplacementEstimate$302.41Shop/Dealer Price$369.54 - $528.12
2006 Mercedes-Benz SL600V12-5.5L TurboService typeEGR Vacuum Modulator ReplacementEstimate$302.41Shop/Dealer Price$370.25 - $529.37
Show example Mercedes-Benz SL600 EGR Vacuum Modulator Replacement prices

What is the EGR Vacuum Modulator all about?

Your vehicle’s exhaust gas recirculation (EGR) system is used to reduce your engine’s emissions by lowering the combustion chamber temperature. This produces less nitrous oxides, and burns pollutants contained in the exhaust gas that are reintroduced into the intake manifold. If the EGR valve opens and allows exhaust gases into the intake, the engine runs more smoothly and efficiently. However, this is not the case at idle, when the engine needs the most vacuum for proper operation.

If the EGR valve opens at idle, you can experience a rough idle and possibly a knock. Engine power is negatively affected at low RPM’s. Engineers implemented a control that closes the EGR valve when the engine is running at lower RPM’s. The engine produces lower vacuum at lower engine speeds, so it’s natural that the control is modulated by the engine’s own vacuum. The EGR vacuum modulator is a diaphragm that closes when the engine vacuum drops to idle, and opens as soon as the vacuum increases. It’s also known as a vacuum modulated valve. If the EGR vacuum modulator is leaking vacuum, is blocked internally, or is leaking, the Check Engine light will come on and the engine may start to knock.

Keep in mind:

  • The EGR system assists in reducing engine emissions. An improperly operating EGR system can cause a smog test failure.
    • Vacuum hoses become brittle over time. Take precautions to not damage the vacuum hoses when working on the EGR system.

How it's done:

  • The EGR vacuum modulator is verified that it needs to be replaced. The engine top trim cover is removed to access the modulator.

  • The defective EGR vacuum modulator is removed from the bracket near the EGR valve and is disconnected.

  • The new EGR vacuum modulator is installed and reconnected.

  • The engine is started and the EGR vacuum modulator is tested for computer codes and operation.

  • The vehicle is road tested to ensure proper operation of the EGR vacuum modulator.

Our recommendation:

The EGR vacuum modulator does not have a replacement interval. It will likely need replacement at some time because it does contain a filter. It can be inspected any time a vacuum test needs to be performed on the engine vacuum. If the EGR vacuum modulator is deemed to be faulty, you will need to have it replaced by one of our expert technicians.

What common symptoms indicate you may need to replace the EGR Vacuum Modulator?

  • Check Engine light is on
  • Engine knock at idle
  • Engine idles rough

How important is this service?

The EGR system partly controls your vehicle’s emissions, and a faulty EGR vacuum modulator can cause your car to fail a smog test. In addition, your vehicle may not idle, or may knock at idle. It is recommended to replace a faulty EGR vacuum modulator as soon as possible.

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Excellent Rating

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Rating Summary
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Chris

22 years of experience
2235 reviews
Chris
22 years of experience
Mercedes-Benz SL600 V12-5.5L Turbo - Brake Pads Replacement (Front) - Huntington Beach, California
Highly recommend Chris and will request him next time I need service on my Mercedes SL600 V12 Turbo Roadster! Chris is an expert craftsman who really knows about my Mercedes. I was happy about saving money by not going to the dealer for service. Who knew you can have your car serviced at home while getting things done around the house instead of wasting time driving to a dealer and hanging out in their waiting area! I will definitely request Chris next time my car needs service!!

Steven

14 years of experience
425 reviews
Steven
14 years of experience
Mercedes-Benz SL600 V12-6.0L - Loud screeching noise when I start the car - Goodyear, Arizona
I have an older Mercedes 600SL and was somewhat concerned about using some one other than a dealer, but my fears were put to rest after my initial conversation with Steve. Steve was on time, knowledgeable, had all of the required tools. diagnose the problem and gave me a stalemate of cost for the repair. He did not try to over sale me on something I didn't need. He made the repairs made sure that everything was correct and assured me that if I needed anything more he was just a phone call awaly. Steve called me the next day just to check that the repair was good.

Richard

21 years of experience
461 reviews
Richard
21 years of experience
Mercedes-Benz SL600 V12-6.0L - Car is not starting - Marietta, Georgia
Fast honest knew what he needed

Edwin

40 years of experience
36 reviews
Edwin
40 years of experience
Mercedes-Benz SL600 V12-5.5L Turbo - Car does not shift from park to drive - Mount Pleasant, South Carolina
Great

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(5)

Rating Summary
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Number of Mercedes-Benz SL600 services completed
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services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
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