Peugeot 308 Dashboard Symbols, Warning Lights & Fault Guide (2007–2024)

Complete Diagnosis, Meanings, and Solutions for Every Indicator

Owning a Peugeot 308 means enjoying European engineering, comfort, and efficiency—but like any modern vehicle, it communicates with the driver through a complex language of dashboard lights. Understanding these symbols can be the difference between a simple fix and an expensive repair.

We have created the most detailed and practical Peugeot 308 dashboard guide available—covering models from 2007 through 2024, including hatchback, SW estate, GT Line, hybrid, petrol, and diesel variants. This guide explains what each warning light means, how serious it is, and what action you should take immediately.

How to Use This Peugeot 308 Warning Light Guide

Not every Peugeot 308 has the same equipment. Trim levels, engine types, and model years introduce variations. However, the core warning architecture remains consistent.

We categorize each symbol by:

• Function of the system
• Color severity (green, yellow, red)
• Likely causes
• Immediate actions required

Understanding Dashboard Light Colors

🟢 Green / Blue – System Active

These lights confirm that a feature is switched on, such as headlights or cruise control. No action required.

🟡 Yellow / Amber – Caution

A system needs attention. You can usually continue driving but should investigate soon.

🔴 Red – Critical Warning

Stop the vehicle safely and seek professional help immediately.

Engine & Powertrain Warnings

Engine Management / Check Engine Light

What it means:
The ECU has detected a fault in the engine, fuel system, emissions, or transmission.

Common causes:

• Loose or damaged fuel cap
• Faulty oxygen sensor
• Misfiring cylinder
• Turbo pressure issue
• EGR valve blockage
• Catalytic converter inefficiency

What to do:
Use an OBD2 scanner or visit a mechanic. Continuing to drive may trigger limp mode.

Engine Oil Pressure Warning

Meaning:
Oil pressure is dangerously low.

Possible reasons:

• Severe oil leak
• Worn oil pump
• Incorrect oil grade
• Blocked oil filter

Action:
Stop immediately. Driving can destroy the engine within minutes.

AdBlue / UREA Warning (Diesel Models)

Meaning:
AdBlue fluid low or SCR system fault.

Peugeot 308 Tyre Pressure Reset – The Complete Driver’s Guide

Fixes:

• Refill AdBlue tank
• Check injector
• Software reset required

Glow Plug Indicator (Diesel)

• 🟢 Green: Normal pre-heating
• 🟡 Yellow: Glow plug or relay fault

Cold starts may become difficult.

Braking & Safety Systems

ABS System Fault

Impact:
Anti-lock braking disabled; standard braking remains.

Likely causes:

• Wheel speed sensor failure
• ABS module fault
• Damaged reluctor ring

Brake Fluid Level Warning

Low fluid often indicates:

• Worn brake pads
• Leak in brake line
• Master cylinder issue

Electronic Stability Control (ESP/ESC)

• Flashing: System actively correcting skid
• Constant: Fault detected

Airbag System Fault

This warning means airbags may not deploy. Common triggers:

• Seat occupancy sensor
• Wiring under seats
• Crash module fault

Cooling System Alerts

High Coolant Temperature

Engine overheating can result from:

• Coolant leak
• Failed water pump
• Faulty thermostat
• Blocked radiator

Immediate action:
Stop and allow cooling—never open cap while hot.

Low Coolant Level

Top up with correct PSA-approved coolant mixture.

Electrical & Battery

Battery Charge Warning

Indicates charging system failure:

• Alternator fault
• Loose belt
• Corroded terminals

Keyless System Fault

Remote key not detected or battery low.

Lighting & Visibility

Bulb Failure

One of:

• Brake light
• Indicator
• DRL
• Number plate light

Automatic Lights Malfunction

Often caused by:

• Dirty light sensor
• BCM coding issue
• Rain/light module failure

Fog Lights Activated

Remember: illegal in many regions without fog.

Driver Assistance Systems

Lane Keeping Assist

Active above 40 km/h.
Fault may involve:

Peugeot 308 Tyre Pressure Reset – The Complete Driver’s Guide

Where to Find Reliable Fiat Repair Services Near Me

• Camera calibration
• Windscreen dirt
• Software glitch

Front Radar / Autonomous Braking

Sensor obstruction is the most common cause.

Parking Sensors

Continuous beep = obstacle too close
No sound = sensor failure

Transmission & Drivetrain

Gearbox Fault

Appears on automatic EAT6/EAT8 models.

Symptoms:

• Jerky shifts
• Limp mode
• No reverse

Clutch Overheat (Manual)

Allow cooling—common on hill starts.

Tire & Steering

Tire Pressure Monitoring

Either:

• Actual low pressure
• TPMS sensor battery dead

Power Steering Fault

Heavy steering = urgent inspection.

Body & Convenience Alerts

• Bonnet open
• Boot open
• Door not closed
• Heated seats active
• Heated windscreen

Service & Maintenance Indicators

Service Due Soon

Triggered by mileage or time interval.

Oil Degradation Counter

Important for PureTech engines with wet belt.

Most Common Peugeot 308 Problems Behind Warning Lights

1. AdBlue injector crystallization
2. NOx sensor failure
3. Wet timing belt debris
4. Battery voltage drops
5. ABS wheel sensor corrosion
6. EAT8 software updates required

Step-by-Step Troubleshooting Strategy

1. Identify color
2. Check owner manual
3. Restart vehicle
4. Scan for codes
5. Inspect fluids
6. Book professional diagnosis

Model Year Differences

• 2007–2013: Early multiplex electrical
• 2014–2017: Start-stop battery sensitive
• 2018–2024: ADAS heavy systems

When You Must NOT Drive

• Oil pressure red
• Coolant overheat
• Brake failure
• Steering lock
• Air suspension collapse

Professional Reset vs DIY

Some lights require:

• Diagnostic tool
• BSI reset
• Software calibration
• Dealer coding

Preventative Care Tips

• Use correct oil spec
• Replace battery every 4 years
• Clean radar & camera
• Quality AdBlue only

Conclusion

The Peugeot 308 is intelligent, but it relies on you to interpret its signals. Understanding dashboard symbols prevents small issues becoming major failures. Whenever a red light appears—treat it like a shout for help. Yellow is a whisper—listen soon.

Frequently Asked Questions

1. Can I drive with the engine light on?

Sometimes—but only if the car runs normally. If power is reduced, stop driving.

2. Why does my Peugeot 308 say AdBlue even after refill?

The system may require a reset or injector cleaning.

3. How do I reset the service light?

Usually via ignition button sequence—but varies by year.

4. Is ABS fault dangerous?

Yes in emergencies—braking distance may increase.

Peugeot 308 Tyre Pressure Reset – The Complete Driver’s Guide

Where to Find Reliable Fiat Repair Services Near Me

Choosing the Best Seat Covers for Your Fiat 500

5. Why does battery light appear after replacement?

Often alternator or BSI configuration issue.

If you want to know other articles similar to Peugeot 308 Dashboard Symbols, Warning Lights & Fault Guide (2007–2024) you can visit the category Service and Parts.