Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Remove/Install Right Rear Knock Sensor - AR15.12-P-2189MNI
2021 Mercedes Benz GT 53 AMGSECTION Remove/Install Right Rear Knock Sensor - AR15.12-P-2189MNI
Engine 177 in model 290
| Risk of injury . Skin or eye injuries may result when handling hot or glowing objects. | Wear protective gloves, protective clothing and safety glasses, if necessary. | AS00.00-Z-0002-01A | |
| Risk of injury caused by scraping or cutting body parts on sharp vehicle parts | Always wear protective gloves when working on or near sharp and non-deburred vehicle parts. Deburr repair panels. |
AS00.00-Z-0017-01A | |
| Topical note | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Remove/install | |||
| 1 | Release and disconnect right lambda sensor electrical connector upstream of the catalytic converter (G3/4x1) and unclip from the bracket. | AR07.04-P-0083MNI | |
| 2 | Release and disconnect right lambda sensor electrical connector downstream of the catalytic converter (G3/6x1) and unclip from the bracket. | AR07.04-P-0084MNI | |
| 3 | Remove bracket of the right lambda sensor electrical connector upstream of the catalytic converter (G3/4x1) and right lambda sensor electrical connector downstream of the catalytic converter (G3/6x1). | ||
| 4 | Release and disconnect electrical connector (6). | ||
| 5 | Remove screw (5) and remove knock sensor 2 (A16/2) | The con act surface must be free from soiling. Otherwise, the knock sensor 2 (A 6/2) will malfunction. |
*BA15.10-P-1001-02G |
| 6 | Install in the reverse order. | ||
| 7 | Read out and delete fault memory. | ||
| AD00.00-P-2000-06FR | |||
| Risk of accident from vehicle starting off by itself when engine running. Risk of injury (bruises and burns) resulting from working on the engine while it is being started or when it is running. | Secure vehicle to prevent it from starting off by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts. | AS00.00-Z-0005-01A | |
| 8 | Perform an engine test run and check the engine for proper function. |
KNOCK SENSORS
| Number | Designation | Engine 177 | |
|---|---|---|---|
| BA15.10-P-1001-02G | Bolt, knock sensor to crankcase | Nm | 20 |
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.