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.
2021 Mercedes Benz A220 BaseFACTORY OEM SERVICE PROCEDURE
Remove/Install Fuel Injection System Control Unit - AR07.08-P-7011MFA
Engine 260 in model 118
as of model year 2023
Engine 260 in model 177, 247
as of model year 2022
Fig 1: Fuel Injection System Control Unit Components Location - Engine 260 In Model 177 As Of Model Year 2022
| Notice | Notes on avoiding damage through contamination and foreign objects | AH00.00-P-5000-01A | |
| Notice | Notes on avoiding damage to ignition system | AH15.10-P-0002-01V | |
| Notice | Information on preventing damage to electronic components due to electrostatic discharge | AH54.00-P-0001-01A | |
| Notes on safety-relevant components | AH00.00-Z-0019-01A | ||
| Remove/install | |||
| 1 | Perform commissioning of ME-SFI [ME] control unit (N3/10). | If ME-SFI [ME] control unit (N3/10) is replaced. | |
| AD00.00-P-2000-06MFA | |||
| 2 | Disconnect ground line from on-board electrical system battery. | AR54.10-P-0003MFA | |
| 3 | Release and disconnect electrical connectors (1) at ME-SFI [ME] control unit (N3/10). | ||
| 4 | Remove bolts (2) and bracket (3). | *BA07.61-P-1003-01G | |
| 5 | Remove ME-SFI [ME] control unit (N3/10). | ||
| 6 | Install in the reverse order. | ||
| 7 | Read out and delete fault memory. | ||
| AD00.00-P-2000-06MFA | |||
| Check | |||
| 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. |
ME-SFI [ME] GASOLINE INJECTION AND IGNITION SYSTEM
| Number | Designation | Engine 260 | |
|---|---|---|---|
| BA07.61-P-1003-01G | Bolts, ME-SFI [ME] control unit to air filter housing | Nm | 5 |
Factory Service Tools
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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.