Mercedes-Benz 400SE Throttle Body Replacement at your home or office.

Our mobile mechanics offer services 7 days a week. Upfront and transparent pricing.

Get an upfront price

Service Area

Average rating from customers who
received a Throttle Body Replacement.
Learn More

$1,945.65 - $1,958.65

Price range for all vehicles


YourMechanic Benefits

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.

Average rating from customers who
received a Throttle Body Replacement.
Learn More


Throttle Body Replacement Estimate for Mercedes-Benz 400SE

Mercedes-Benz 400SE Throttle Body Replacement costs $1952 on average.

CarServiceEstimateShop/Dealer Price
1992 Mercedes-Benz 400SEV8-4.2LService typeThrottle Body ReplacementEstimate$3793.81Shop/Dealer Price$4741.44 - $7524.04
Show example Mercedes-Benz 400SE Throttle Body Replacement prices

Throttle Body Replacement Service

What is the throttle body and how does it work?

The throttle body is an air metering device mounted between the air filter and snorkel, and the intake plenum. Within the throttle body is a movable throttle plate whose position controls the amount of air that enters the engine to determine engine speed. Throttle body designs vary. Some incorporate an idle air control valve, throttle position sensor, and other electronic throttle controls. The throttle plate in the throttle body can be controlled directly by an accelerator pedal cable or fully electronically in the newest drive-by-wire systems.

When to consider replacing the throttle body:

  • Check engine light and/or reduced power warning light is on. Most modern throttle bodies have electrical components, such as a throttle position sensor. These components are monitored by the powertrain control module (PCM). If the check engine light or reduced power warning light comes on, a mechanic will determine if any of the stored trouble codes implicate a throttle body malfunction.
  • Wrong idle speed. Carbon deposits in the throttle body, particularly around the movable throttle plate or in the idle air control valve, can cause the engine idle speed to be too low or too high.
  • Poor transmission shifting. In some applications, transmission shift timing relies on signal outputs from the throttle body. If the throttle position sensor is defective, that might adversely affect shift timing and feel.

How do mechanics replace the throttle body?

  • The engine cover is removed, if necessary.
  • The flexible rubber snorkel from the air filter housing to the throttle body is disconnected. Typically, the connection is made with a large stainless steel hose clamp.
  • The electrical connections to the throttle body are removed.
  • If the throttle body is not a drive-by-wire system, the accelerator cable and cruise control cable are disconnected and set aside.
  • The bolts retaining the throttle body to the plenum, the gasket, and the throttle body are removed. If the throttle body is being cleaned and tested for re-use, approved chemicals are used in the cleaning process.
  • The new or serviced throttle body is re-attached to the plenum and the bolts torqued to factory specifications.
  • All cables and electrical connections are restored. The intake air snorkel is reconnected.
  • If applicable, the electronic throttle installation and idle re-learn procedures are performed using an appropriate scan tool.
  • Finally, the engine is started, brought to normal operating temperature, and idle speed is checked. The car is road tested to ensure normal operation and no illumination of warning or service lights.

Is it safe to drive with a throttle body problem?

Yes. But, the vehicle may be limited in power or put into what is referred to as limp mode, in order to get the vehicle to a repair facility. If the check engine light is on, or the electronic throttle control warning light is on, but there is no noticeable difference in engine performance, the car can be safely driven. However, it is best to have it diagnosed and repaired at your earliest convenience to avoid unexpected breakdown or possible damage to the catalytic converter.

When replacing the throttle body keep in mind:

  • Many modern throttle bodies have spring loaded sensors and plastic gears that are not intended to be manipulated directly during any diagnostics or inspections. These components are controlled electronically or generate signals. It is best to let a mechanic use approved tests to diagnose the problem.
  • Wiring faults, bad grounds, or bad terminal connections can make it appear as though an electronically controlled throttle has failed. A mechanic will always rule out all other causes before replacing the throttle body.
  • When cleaning the throttle body, special care should be taken to use only special spray cleaners designed to not damage electrical components or sensors.

Fast and easy service at your home or office

GET A QUOTE FOR YOUR CAR

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


YourMechanic Mercedes-Benz Service

Average Rating

4.8/5

Number of Reviews

3,851

Rating Summary
3,554
156
44
19
78
3,554
156
44
19
78

Mike

12 years of experience
23 reviews
Mike
12 years of experience
Mercedes-Benz ML350 - Battery - San Diego, California
Mike did an excellent job of replacing a Mercedes battery with a ver difficult installation. Mike explained the job and checked the vehicle’s electrics to make sure everything worked properly.

James

30 years of experience
500 reviews
James
30 years of experience
Mercedes-Benz E500 - Oil Change - Downey, California
Excellent mechanic

Jonathan

34 years of experience
368 reviews
Jonathan
34 years of experience
Mercedes-Benz C230 - Car is not starting - Pinellas Park, Florida
I've never used this type of service before and was hesitant, which I'm sure most would be. But if Jonathan is was to expect from other professionals working for Your Mechanic, than I'm completely sold. Jonathan arrived on time and jumped right in. Prior to his arrival I had watch a Youtube video on the symptoms of my vehicle. The video I watched had a very skilled mechanic going through several procedures to drill down to the specific problem, but clearly the guy in the video seemed like he works with Mercedes all the time, so I was concerned what type of knowledge Jonathan might have on a Mercedes. Jonathan arrived, popped my hood, had me start the car, etc. He then proceeded to run through the same checks I just watched in the video! Not only that, I could clearly see Jonathan's skill level with a Mercedes. This man knew where everything was without hesitation. He is an extreme, highly skilled professional Mercedes mechanic. I can say this without a doubt. My wife had driven my car the day before, and it stalled on her in the middle of the row. The vehicle had been running rough before then. Jonathan checked to see if I was getting fuel to the engine, he then checked the fuel pump to make sure that it was starting when the vehicle turned on. And that when he asked 'is there fuel in the car?'. I was like, well it was a 1/4 a tank before my wife drove. Jonathan said go get some gas and I'll wait. Ran to the store, put 2 gallons in a portable tank, added the fuel and in started right up. Jonathan asked me to drive it around the block just to be sure, which I did and everything was fine. There is no doubt in my mind that if I would have taken this to a shop, I would have walked out with a $500 bill and a new fuel pump. Jonathan just earned Your Mechanic a customer for life. This man is worth his weight in gold (and then some). Needless to say - i'm extremely impressed. And embarrassed that my wife ran the car out of gas ;) Jonathan was friendly, professional, helpful, on time and most importantly honest.

Chris

14 years of experience
312 reviews
Chris
14 years of experience
Mercedes-Benz E350 - 117,000 Miles Maintenance Service - Oceanside, California
Great service

Excellent Rating


YourMechanic Mercedes-Benz Service

Average Rating

4.8/5

Number of Reviews

3,851

Rating Summary
3,554
156
44
19
78
3,554
156
44
19
78
Red-stars EXCELLENT RATING ON
Number of Mercedes-Benz services completed
42361+
services done by our mechanics
TOTAL NUMBER OF EXPERT Mercedes-Benz MECHANICS
800+
experts on our platform

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.

1-800-701-6230 · hi@yourmechanic.com