BMW 135i Throttle Body Replacement at your home or office.

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Throttle Body Replacement Estimate for BMW 135i

BMW 135i Throttle Body Replacement costs $615 on average.

CarServiceEstimateShop/Dealer Price
2012 BMW 135iL6-3.0L TurboService typeThrottle Body ReplacementEstimate$1134.45Shop/Dealer Price$1420.07 - $2221.79
2008 BMW 135iL6-3.0L TurboService typeThrottle Body ReplacementEstimate$1053.04Shop/Dealer Price$1319.08 - $2038.96
2011 BMW 135iL6-3.0L TurboService typeThrottle Body ReplacementEstimate$1172.44Shop/Dealer Price$1468.33 - $2277.75
2010 BMW 135iL6-3.0L TurboService typeThrottle Body ReplacementEstimate$1025.44Shop/Dealer Price$1284.52 - $1983.64
2009 BMW 135iL6-3.0L TurboService typeThrottle Body ReplacementEstimate$1053.04Shop/Dealer Price$1319.12 - $2039.03
2013 BMW 135iL6-3.0L TurboService typeThrottle Body ReplacementEstimate$1124.45Shop/Dealer Price$1407.30 - $2206.94
Show example BMW 135i 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.

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Meet some of our expert BMW mechanics

Real customer reviews from BMW owners like you.

Excellent Rating

(34)

Rating Summary
31
2
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1
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31
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Eduardo

19 years of experience
504 reviews
Eduardo
19 years of experience
BMW 135i L6-3.0L Turbo - Water Pump - Houston, Texas
Very prompt, courteous and professional. Would highly recommend.

Sergey

9 years of experience
28 reviews
Sergey
9 years of experience
BMW 135i L6-3.0L Turbo - Oil Change - Sacramento, California
He was fast and did an excellent job. I’m super satisfied and would love him to do the services on my car for next time as well.

Steven

14 years of experience
425 reviews
Steven
14 years of experience
BMW 135i L6-3.0L Turbo - Air Filter - Phoenix, Arizona
Today was my first experience with Steven . Not only was he on time, he called to say he could arrive early if that worked for me! He spent a good 20 mins going over all my questions and educating me on some features in my car that I wasn't sure about. The work he performed exceeded my expectations and he was able to reset my computer! I'm thrilled to have found him and will definitely use I. The near future for any services needed. My fees for the work performed were over half what they would cost at Bmw, plus he removed a brake flush , said I didn't need when the dealer said I did!

H

26 years of experience
828 reviews
H
26 years of experience
BMW 135i L6-3.0L Turbo - Turn signal light is not working - Mountain View, California
I made an appointment with Honorio to diagnose a malfunctioning turn signal on my car. He arrived on time (even a bit earlier than the appointment time) and solved my car problem. Not only was he able to diagnose and fix my broken turn signal, he was able to explain to me how he isolated the issue and arrived at the solution. Honest, detailed, and trustworthy -- would definitely recommend!

Excellent Rating

(34)

Rating Summary
31
2
0
1
0
31
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Number of BMW 135i services completed
374+
services done by our mechanics
TOTAL NUMBER OF EXPERT BMW MECHANICS
1100+
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