Engine & fuel system
3 documented faults — symptoms, causes and workshop fixes.
Unable to program central locking key
Overview
- Affects
- All models with keyless entry/start system, 01/01/18-13/12/18.
- Remedy
- Software update
Cause
Keyless entry/start control module software fault.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Re-program keyless entry/start control module with upgraded software. Note: To carry out an effective repair a software upgrade will be required - refer to manufacturer.
Data: Motorwise Workshop. Bulletin 1.
Intermittent operation of multifunction display
Overview
- Affects
- All models with 7 inch multifunction display incorporated in instrument panel.
- Remedy
- Software update
Symptoms
Erratic oil level readings in instrument panel.
Cause
Instrument panel software fault.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Re-program instrument panel with upgraded software. Note: To carry out an effective repair a software upgrade will be required - refer to manufacturer.
Data: Motorwise Workshop. Bulletin 2.
Incorrect fuel gauge reading
Multifunction control module software fault. Fix: re-program with updated software.
Overview
- Affects
- All models, MY 2020→.
- Remedy
- Software update
Symptoms
Door mirrors intermittent operation or not working. Heated rear window intermittent operation or not working. Incorrect fuel gauge reading immediately after re-fuelling vehicle.
Repair steps
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Re-program multifunction control module with upgraded software.
- Erase any stored trouble codes.
Data: Motorwise Workshop. Bulletin 4.
Suspension & drivetrain
1 documented fault — symptoms, causes and workshop fixes.
Cruise control intermittently disengages by itself
Overview
- Affects
- All models with cruise control, →21/02/18.
- Remedy
- Software update
Symptoms
Cruise control not returning to preset vehicle speed.
Cause
Vibration through suspension due to winter tyres fitted.
Repair
- Carry out electrical, mechanical and component tests (as applicable) to eliminate any other possible cause(s).
- If no fault(s) found: Re-program ABS/ESP control module with upgraded software. Note: To carry out an effective repair a software upgrade will be required - refer to manufacturer.
Data: Motorwise Workshop. Bulletin 3.
Glossary
Technical terms used in this guide.
- Trouble Codes
- Standardised fault codes stored by the engine control module, read with a diagnostic tool
- ABS/ESP
- Anti-lock braking and electronic stability programme — the system that stops the wheels locking and keeps the vehicle stable
- Control Module
- A control unit for one of the vehicle's systems (engine, gearbox, brakes, body, and so on)
- Instrument Panel
- The dashboard display that shows warning lights and messages
- Keyless Entry
- Unlocking the car with a remote or by carrying the key, without turning a barrel
- Multifunction Control Module
- The control module that runs shared electrical functions (lights, wipers, locking, and so on)
- Re-Program
- Update the software on a control module using the manufacturer's diagnostic tool
Frequently asked questions
What are the common faults with the Alfa Romeo Giulia 2.9 Quadrifoglio?
This guide contains four workshop bulletins for the Alfa Romeo Giulia 2.9 Quadrifoglio. Of these, three concern the engine and fuel system and one the suspension and drivetrain. Symptoms, causes, repair steps and part numbers are shown where supplied.
Does every Alfa Romeo Giulia 2.9 Quadrifoglio have these faults?
No. These are patterns documented across the model by workshops, not predictions for an individual vehicle. Where a fault applies only to certain vehicles or VIN ranges, that is listed with the fault.
Can I check for Alfa Romeo Giulia 2.9 Quadrifoglio faults myself?
Many of them. The documented symptoms can be seen, heard or felt during a test drive.