Here’s a detailed guide for removing the throttle body on your Mercedes‑Benz B‑Class W245 (B170, 2.0 L petrol / CNG version) — with important cautions and tips. Please make sure you’re comfortable working on cars and understand that mistakes here can lead to engine damage, air intake leaks, or erratic idle.
Removal Steps
Here is a step-by-step for removal (adapted generically from published manuals for similar engines).
1. With the intake duct removed, locate the throttle body mounted between the air intake and the intake manifold.
2. Disconnect the electrical connector(s) from the throttle body – you’ll typically have the throttle position sensor and the electronic actuator.
3. Disconnect any vacuum hoses, pipes or coolant lines attached to the throttle body (if applicable). Make sure you tag or mark them so you don’t mix them up on reassembly.
4. Remove the bolts or nuts securing the throttle body to the intake manifold. Often there are 4 bolts in a cross pattern. When reinstalling, the manual suggests tightening in stages:
First until seated
Then until gasket is compressed
Finally to the specified torque.
5. Remove the throttle body and old gasket. Important: Ensure no debris falls into the intake manifold once the throttle body is off.
6. If you are replacing rather than cleaning, transfer any sensors or actuators from the old unit as required. Some manuals note you may need to perform a throttle adaptation procedure afterward.
Reinstallation & Post-Procedure
Fit a new gasket between the throttle body and intake manifold.
Re-install bolts in the correct sequence and torque them to the specification (check your exact engine’s spec).
Reconnect vacuum lines, hoses, electrical connectors, and the air intake piping.
Reconnect battery.
Start the engine and check for smooth idle, no air leaks, no error codes.
Perform a throttle body adaptation / relearn: As one source states, after battery disconnect or throttle body replacement, you may need to let the vehicle idle so the ECU can learn the new throttle flap position.
Specific Notes for Your Car (B170 / W245)
The part-number information shows the throttle body for W245 B170 petrol (1.7 L) uses OEM numbers like A 266 141 05 25 / 0280750175.
Even though your version is 2.0 L petrol + CNG, the layout for the throttle body should be very similar—check for any CNG‐system related additional piping or sensors that might interfere.
Because of the CNG conversion (if factory or aftermarket), double-check that there are no additional vacuum lines or piping around the intake system unique to the CNG variant.
Common Pitfalls & Tips
Ensure the intake system is sealed well after reassembly — any unmetered air entering the manifold will cause rough idle or fault codes.
Do not manually force the throttle plate open while the connector is disconnected; the electronic actuator may be damaged.
After replacing/cleaning the throttle body, some Mercedes systems require adaptation to avoid idle/surging issues.
If the throttle body is heavily carbon-fouled, simply cleaning might not suffice; removal may be required.
Keep track of all connectors and hoses — one extra disconnected hose can cause major idle problems.

#automobile ​ #cars​​ #mechanic​​ #mechanicrepairteam​​ #shortsfeed​​ #mechanical​​ #repair​​ #toyota​ #vw​ #volkswagen​ #bmw​ #mercedes​ #carsfix​   

Youtube:
    https://www.youtube.com/@sevtauto9289
    https://www.youtube.com/@petersgarage111

If the video was useful give us “thumbs up” and consider subscribing to the channel to see more videos!

Disclaimer:
Due to factors beyond the control of Cars FIX Sevt AUTO, I cannot guarantee against unauthorized modifications or improper use of this information. Cars FIX Sevt AUTO assumes no liability for any property or personal damage that may arise from doing a repair on your vehicle after watching any of my videos. Information given in this video does not guarantee the desired outcome. Any injury, damage or loss that may result from improper use of the tools, equipment, or the information contained in this video is the sole responsibility of the user  and not Cars FIX Sevt AUTO. Due to factors beyond the control of Cars FIX Sevt AUTO, no information contained in this video shall create any express or implied warranty or guarantee of any particular result.

ЗА ОТГОВОРНОСТТА:
Това видео има за цел да ви информира и не гарантира определени резултати.
Видеото съдържа съвети , които може да са ви полезни при определени ремонти. Cars FIX Sevt AUTO не носи отговорност за нанесени щети или наранявания при извършване на ремонти. Клипа е само информативен и не дава гаранция за определени резултати.