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.
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HOMESERVICE MANUALSBMW2011335I 4D SEDAN, AUTOMATICREPAIR AND DIAGNOSISENGINE PERFORMANCEIGNITION SYSTEMENGINE PERFORMANCE - FUNCTIONAL DESCRIPTION -- E90
2011 BMW 335i 4D Sedan, Automatic
Engine Performance - Functional Description -- E90
2011 BMW 335i 4D Sedan, AutomaticSECTION Engine Performance - Functional Description -- E90
- Engine Performance - Functional Description
- Air Mass System Test For Diesel Engines
- Air Supply (N55)
- Air Supply (ALPINA Version)
- Automatic Engine Start-Stop Function
- Notes
- Brief component description
- DC/DC converter
- Automatic engine start-stop function button
- Starter motor
- Alternator
- AGM battery
- Intelligent battery sensor
- Engine compartment lid contact switch
- Seat belt buckle switch
- Brake vacuum sensor, manual transmission
- Zero-gear sensor, manual transmission
- Clutch module, manual transmission
- Hydraulic impulse storage, automatic transmission
- System overview
- System functions
- Displays
- Power management
- Engine shutdown
- Engine start
- Switch-off inhibitors, switch-on requesters and deactivators
- Safety functions
- Notes for Service department
- Check Mixer Selective Catalytic Reduction (SCR) Exhaust Emission System
- Check Urea/Water Mixture Quality
- Combustion Preheating System Digital Diesel Electronics (DDE) 7.3
- Comparison Images EWS Oscilloscope Measurement
- Digital Diesel Electronics (DDE) Hot Film Air Mass Meter (HFM) Signal
- Digital Diesel Electronics (DDE)
- Digital Diesel Electronics (DDE) Fault Symptoms
- Digital Diesel Electronics (DDE) 7.3 Control Unit
- Electronic Control Of The Fuel Pump
- Engine Speed Detection Digital Diesel Electronics (DDE7)
- Engine Speed Recording
- Engine Ventilation Heating
- Exhaust Emission System
- Engine Control System Interfaces
- FUB-FPA-FP-120042-A10
- Foot Pedal
- Fuel Heating
- Fuel Injection
- Fuel Injection Rate Monitoring
- Fuel Injector Return Volume Measurement
- Fuel Tank
- Fuel Temperature Sensor
- High-Pressure Exhaust Gas RECIRCULATION Digital Diesel Electronics (DDE) 7.3 (Us Diesel)
- High-Pressure Fuel System
- Idle Speed
- Ignition
- Knock Control
- Low Pressure Fuel System
- Auto Start/Stop (MSA) And Power Management
- Auto Start/Stop (MSA) Test Module 'Zero Gear SENSOR'
- Auto Start/Stop (MSA) Test Module For Brake Partial Vacuum Sensor (Bus)
- Misfire Detection
- Nominal Values For Accelerator Pedal Module
- Non-Return Valve
- Rail Pressure Control DDE 7.3 In M57TU2TOP U
- Selective Catalytic Reduction (SCR) Catalytic Converter System Test (Generation 1: M57/N57 Engine In E7X, E90)
- Selective Catalytic Reduction (SCR) System (Us Diesel) (Active Tank)
- Notes
- SCR system overview (without passive tank)
- Components of the SCR system (without passive tank)
- Chemical reaction of the selective catalytic reduction
- Operating strategy and display concept for US diesel
- Temperature resistance and ageing stability of the mixture
- Integration of the SCR system in the particle filter composite system
- Interaction with MSA system (Automatic Start/Stop function)
- Diagnosis instructions
- Signal names and interface description
- Selective Catalytic Reduction (SCR) System (Us Diesel) (Passive Tank)
- Selective Catalytic Reduction (SCR) System (Us Diesel) Particle Filter System
- Selective Catalytic Reduction (SCR) Warning And Shutdown Scenario
- Smooth Running Control
- Tank-Ventilation Valve S65
- Test Of High-Pressure Pump
- Troubleshooting On Exhaust Turbocharger
- Vacuum Supply
- Valve Gear
- Notes
- Brief component description
- Camshafts
- Intake and exhaust valves
- Intake camshaft sensor and exhaust camshaft sensor
- VANOS solenoid valve intake and VANOS solenoid valve exhaust
- Valvetronic servomotor
- System overview
- System functions
- Variable camshaft timing control, VANOS
- Valve stroke control, Valvetronic
- Cap Of Mechanical Movement Range
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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.