Mercedes-Benz 300TD Throttle Body Replacement at your home or office.

Our mobile technicians 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

$655.06 - $1,982.42

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 300TD

Mercedes-Benz 300TD Throttle Body Replacement costs $1705 on average.

CarServiceEstimateShop/Dealer Price
1985 Mercedes-Benz 300TDL5-3.0L Turbo DieselService typeThrottle Body ReplacementEstimate$3592.88Shop/Dealer Price$4489.84 - $7068.81
1982 Mercedes-Benz 300TDL5-3.0L Turbo DieselService typeThrottle Body ReplacementEstimate$3592.88Shop/Dealer Price$4489.59 - $7068.38
1981 Mercedes-Benz 300TDL5-3.0L Turbo DieselService typeThrottle Body ReplacementEstimate$3592.88Shop/Dealer Price$4489.84 - $7068.81
1983 Mercedes-Benz 300TDL5-3.0L Turbo DieselService typeThrottle Body ReplacementEstimate$3604.88Shop/Dealer Price$4498.81 - $7075.52
1987 Mercedes-Benz 300TDL6-3.0L Turbo DieselService typeThrottle Body ReplacementEstimate$1198.13Shop/Dealer Price$1505.39 - $2256.80
1984 Mercedes-Benz 300TDL5-3.0L Turbo DieselService typeThrottle Body ReplacementEstimate$3592.88Shop/Dealer Price$4484.70 - $7059.83
Show example Mercedes-Benz 300TD 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

3,713

Rating Summary
3,426
150
43
17
77
3,426
150
43
17
77

Kenny

26 years of experience
91 reviews
Kenny
26 years of experience
Mercedes-Benz E320 - Oil Change - Sunnyvale, California
Great, quick, and friendly. I really wanted the piece of mind on my car that it is in great shape. Kenny did a full inspection and change. Was way less hassle then going to the shop. Thanks guys for the service.

Rusty

21 years of experience
362 reviews
Rusty
21 years of experience
Mercedes-Benz CLK430 - Headlight is not working - Arlington, Texas
Very professional

Robert

15 years of experience
28 reviews
Robert
15 years of experience
Mercedes-Benz 300SEL - Drive Belt Tensioner - Newtown Square, Pennsylvania
Robert has a positive attitude and is very professional. He got my vintage (ancient?) Mercedes all patched up and running again. I would definitely recommend Robert without hesitation!

Augie

29 years of experience
263 reviews
Augie
29 years of experience
Mercedes-Benz C300 - Brake Pads Replacement (Front) - North Hills, California
Surprised & impressed at how quick he was with replacing the brakes on my car. Will definitely book him again for future maintenance work needed on my car.

Excellent Rating


YourMechanic Mercedes-Benz Service

Average Rating

4.8/5

Number of Reviews

3,713

Rating Summary
3,426
150
43
17
77
3,426
150
43
17
77
Red-stars EXCELLENT RATING ON
Number of Mercedes-Benz services completed
40843+
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