Description
Air Conditioning Control Unit for Citroën C1, Peugeot 107 and Toyota Aygo. Original Part.
Product Overview
This original climate control switch is a direct-fit replacement for Citroën C1, Peugeot 107 and Toyota Aygo models. It is the user interface for the vehicle HVAC system, providing control over ventilation, air distribution and air conditioning activation. Commonly searched under OE numbers 84660-0H010 and 6554KX, the unit is a frequently replaced part in vehicles with mechanical/dial-style climate controls.
Function
The control unit operates the heating, ventilation and air conditioning functions: selecting fan speed, directing airflow, activating the air conditioning compressor and switching recirculation modes. It converts user inputs into electrical signals sent to the blower motor, blend doors and A/C command circuits to regulate cabin climate.
How It Is Replaced
Replacement is straightforward for a trained mechanic or experienced DIYer. Typical steps:
- Park the vehicle with the ignition off and remove the key.
- Disconnect the negative battery terminal to avoid short circuits.
- Remove the center fascia trim panels surrounding the HVAC controls (carefully release retaining clips to avoid damage).
- Unscrew the mounting screws securing the control unit and gently pull the unit forward.
- Disconnect the electrical connector(s) and swap the unit for the replacement.
- Reassemble the trim, reconnect the battery and test all HVAC functions (fan speeds, air distribution, A/C engagement and recirculation).
Recommended For Installation
Installation is recommended to be performed in a dry, well-lit workshop using basic hand tools and trim removal tools. Always disconnect the battery before starting work. Inspect electrical connectors and wiring for corrosion or damage while the unit is removed. After fitting, verify that the blower, A/C compressor engagement and mode doors respond correctly to control inputs.
Why This Part Fails Most Often
Common failure modes include worn or dirty contact pots/switches, broken or fatigued knobs and mechanical linkages, moisture ingress causing corrosion of electrical contacts, and connector wiring faults. Symptoms typically include unresponsive fan speed selection, intermittent operation, stuck mode settings or failure to activate the A/C compressor signal.
Technical Information
- Manufacturer: Stellantis (Citroën/Peugeot)
- Model: Citroën C1, Peugeot 107, Toyota Aygo
- Product Codes: 84660-0H010, 6554KX
- Additional Numbers: None Listed
Notes For Professionals And DIYers
This unit is an OEM-style control intended as a direct replacement. When replacing, check for related faults such as blower motor failure, damaged mode door actuators or a faulty A/C compressor clutch that could have stressed the control unit. After installation, confirm full functionality of each control position and monitor for intermittent faults caused by wiring or connector issues.
