You’re driving your Citroën C5 Aircross on the highway when suddenly, the “Engine Oil Pressure” light illuminates on your dashboard. Your heart skips a beat as you wonder what’s going on. You’ve heard stories about people ignoring these warning lights, only to end up with costly repairs down the line.
But what do these lights really mean, and how can you address them promptly? Understanding the different categories of dashboard warning lights – from engine performance to safety features – is vital in maintaining your vehicle’s overall health and ensuring a safe driving experience.
Quick Navigation
Engine and Performance Warnings
Oil Pressure Warning Light
The Oil Pressure Warning Light indicates low engine oil pressure. You should check the oil level and top it up if necessary. If the light remains lit, contact a Citroën workshop.
Engine Warning Light
The Engine Warning Light may remain lit or flash, indicating an emission control system fault or engine management system fault.
High Temperature Warning Light
The High Temperature Warning Light signals maximum engine coolant temperature, so you should stop the vehicle, switch off the engine, and let it cool down.
Stop Warning Light
The Stop Warning Light indicates a serious fault with the engine, brakes, or power steering or a major electrical fault. You should stop as soon as safely possible and contact a Citroën workshop.
Braking System Alert Lights
Brake Warning Light
The Brake Warning Light indicates low brake fluid levels. You should top up with brake fluid as soon as possible. If the problem persists, contact a Citroën workshop.
ABS Warning Light
The ABS Warning Light signals a malfunction of the Anti-lock Brake System. Although normal brakes remain unaffected, you should contact a Citroën workshop for assistance.
EBFD Warning Light
The EBFD Warning Light indicates a fault with the electronic brake force distribution system. In this case, you should discontinue driving and contact a Citroën workshop.
Electrical and Miscellaneous Issues
AdBlue Warning Light
If the AdBlue warning light appears, it’s time to top up the diesel exhaust fluid, as your vehicle requires it to function properly. Don’t ignore this warning, as it can lead to engine damage.
Electric Parking Brake Warning Light
Electric faults are also indicated on your dashboard, such as the Electric Parking Brake Warning Light, which signals a problem with the electric parking brake application or release mechanism.
Spanner Warning Light
The Spanner Warning Light may appear, indicating a fault with the vehicle, which may be accompanied by a message.
In any case, it’s essential to contact a Citroën workshop for assistance to resolve these electrical and miscellaneous issues promptly.
DSC, Tyre Pressure, and Airbag
DSC Warning Light
When the DSC warning light flashes, it indicates the system is activated due to loss of grip or trajectory. If the light remains on, there’s a fault, often associated with a malfunctioning wheel speed sensor.
For DSC Troubleshooting, check the sensors and consult a Citroën workshop if necessary.
Tyre Pressure Warning Light
The tyre pressure warning light remains lit with an audible alert if one or more tyre pressures are low. Use Tyre Pressure Monitoring to guarantee ideal pressure.
Airbag Warning Light
The airbag warning light should go off soon after the engine has started. If it remains lit, there’s a malfunction with the airbag and seat belt pretensioner system.
Additional Warning Lights and Faults
Diesel Particulate Filter Warning Light
This light indicates the filter is full and requires Filter Regeneration, which can be achieved by driving at a speed of at least 37 mph (60 km/h) until the warning lamp goes off.
Parking Brake Fault
If the DSC warning light stays illuminated along with the spanner fault symbol and the message “Parking brake fault,” it signifies that the emergency braking system doesn’t have full power.
Power Steering Warning Light
This warning light indicates a problem with the power steering system. It may cause the steering to become harder to operate, particularly at slower speeds.
Filter Regeneration
When the diesel particulate filter is full, Filter Regeneration is required. Drive at a speed of at least 37 mph (60 km/h) until the warning lamp goes off to resolve the issue.
Power Steering System Alerts
Power Steering Warning Light
The power steering warning light signals a potential Power Steering Failure, which can make steering harder, especially at slower speeds.
Steering Motor Overheat
One common cause of the warning light is Steering Motor Overheat. If this occurs, stop the vehicle as soon as it’s safe to do so and switch off the engine. Allow the system to cool down before restarting.
If the warning light remains lit, contacting a Citroën workshop is advisable to prevent further damage.
Safety Features Malfunctions
Collision Detection
If the Collision Alert Warning Light comes on, it may indicate a fault with the Collision Risk Alert/Active Safety Brake system. Ensure the front camera and radar are clear and clean.
Lane Assist
If the Lane Departure Warning Light or Active Lane Keeping Assist Warning Light appears, it may signify a fault with the Active Lane Departure Warning System or Active Lane Keeping Assist system. Verify that road lines are clear and visible, and contact a Citroën workshop for assistance.
Brake System
The Brake Warning Light or ABS Warning Light may indicate a low brake fluid level or a malfunction of the Anti-lock Brake System.
Airbag System
If the Airbag Warning Light remains lit, it may indicate a malfunction with the airbag and seat belt pretensioner system.
Engine Management System Faults
Engine Warning Light
The engine warning light signals an emission control system fault or an engine management system fault in your Citroën C5 Aircross.
Fault Code Analysis
Diagnosing the issue requires performing a Fault Code Analysis using Engine Diagnostic Tools. These tools identify specific fault codes, which can then be referenced to determine the appropriate repair procedure.
Cooling System Warning Lights
Coolant Level Warning Light
This light indicates a low coolant level. Check the coolant reservoir and top it up if necessary.
High Temperature Warning Light
This light signals maximum engine coolant temperature. Stop the vehicle, switch off the engine, and allow several minutes for the engine cooling system to cool down.
Temperature Gauge
The temperature gauge monitors the engine coolant temperature. If the needle enters the red zone, stop the vehicle and allow it to cool down.
Coolant Overheat Warning Light
This warning light indicates the engine coolant temperature has exceeded a safe limit. Stop the vehicle and switch off the engine to prevent damage.
These warning lights are crucial for ensuring your vehicle operates within a safe temperature range.
Vehicle Maintenance Reminders
Importance of Maintenance
Maintaining your Citroën C5 Aircross according to the recommended schedule ensures peak performance, fuel efficiency, and safety.
Regular Inspections and Scheduled Maintenance
Regular Vehicle Inspection and Scheduled Maintenance help prevent unexpected breakdowns, minimize repair costs, and ensure optimal vehicle performance.
Maintenance Schedule
Refer to your owner’s manual for recommended service intervals. Staying on schedule with oil changes, tire rotations, and other essential services avoids costly repairs.
By adhering to Vehicle Maintenance Reminders, you guarantee a safe, reliable, and efficient driving experience.
