KNOWN FAULTS · Alfa Romeo

Alfa Romeo Tonale 1.3 Plug-in Hybrid Q4 common problems.

2022–2026 · Plug-in hybrid

Sources are not verified in real time and no entry confirms that your car is affected.

4 known faults with sources

Applies if: US bulletin, where the Tonale is only sold as a plug-in hybrid; in Europe, ask the dealer.

Tonale warning light with C0529-00 after turning the wheel while stationary: steering angle sensor calibrationSteering

Engine / equipment: Alfa Romeo Tonale
Period mentioned: Built up to 30/05/2023 (US bulletin)
Symptoms: After switching the ignition off and on, turning the steering wheel without power assistance turns on the engine warning light and stores code C0529-00; it goes out after turning the wheel from lock to lock.
Possible cause described: The electric power steering (EPS) module software loses the steering angle sensor calibration. Stellantis technical bulletin 08-149-23 (June 2023).
Check for the garage: The dealer updates the EPS module software (it may need several updates in a row) and recalibrates the steering angle sensor.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Applies if: Defects documented by US recalls; European cars may have equivalent campaigns: check by VIN.

12 V and high-voltage cables and brake pedal on the Tonale plug-in hybridHigh-voltage battery

Engine / equipment: Alfa Romeo Tonale 1.3 Plug-in Hybrid Q4 (twin of the Dodge Hornet)
Period mentioned: 2023–2025
Symptoms: Connections of the 12 V positive cable or the high-voltage connector that overheat and can cause a fire, parked or driving; a brake pedal that can collapse and leave no brakes.
Possible cause described: Cables not tightened properly at the factory (NHTSA 23V-623) and a defective brake pedal (24V-752, Tonale 2024–2025).
Check for the garage: Check both campaigns by VIN.
Cost cited in the source: Free under the recalls.A rough figure from the original database, not an up-to-date quote.

Applies if: US bulletin 08-343-26 for the 2024 Tonale sold there (plug-in hybrid); in Europe, ask the dealer.

Flat battery and no start caused by the body control module software (Tonale 2024)Electrical and electronic systems

Engine / equipment: Alfa Romeo Tonale 1.3 plug-in hybrid Q4
Period mentioned: 2024 (US model years)
Symptoms: The battery runs flat and the car will not start; the engine warning light is on and, with the headlamp-off delay active, the lights-on chime sounds when the driver door is opened.
Possible cause described: The body control module (BCM) software causes a high current draw with the ignition off. Stellantis fixes it by reprogramming the BCM (bulletin 08-343-26).
Check for the garage: Tell the garage the battery goes flat for no reason and ask them to check the BCM software level before replacing the battery.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.

Applies if: US bulletin 23-029-26 for the Tonale built from 20/6/2025 to 6/2/2026 (the plug-in hybrid sold there); in Europe, ask the dealer.

Condensation or water inside the tailgate tail lamp (Tonale 2025–2026)Lighting

Engine / equipment: Alfa Romeo Tonale 1.3 plug-in hybrid Q4
Period mentioned: 2025–2026 (US model years), built from 20/6/2025 to 6/2/2026
Symptoms: Condensation or water can be seen inside the tail lamp mounted on the tailgate.
Possible cause described: A material defect of the lamp. Stellantis says to inspect it and, if needed, replace the tailgate tail lamp and the nameplate (bulletin 23-029-26).
Check for the garage: Show the garage the condensation in the tailgate lamp and ask them to inspect it under warranty as per bulletin 23-029-26.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.