Renault cars are reliable, but like any vehicle, their dashboards light up with warning symbols from time to time. These warning lights are your car’s way of telling you something is wrong. Some are simple reminders, others signal serious risks.
In this complete guide, you will learn what each Renault warning light means, how to diagnose the problem, and what to do next.
PRO TIP: To make things easier, we recommend the Carista OBD2 scanner and app. It connects to your Renault’s onboard computer and gives you clear diagnostics within minutes.
Renault Engine Warning Light (Check Engine Light)
This amber engine-shaped light signals issues with the engine or emissions system. It could mean faulty sensors, misfires, or fuel system problems.
How to fix it:
- Check the fuel cap is tight.
- Scan with the Carista OBD2 tool for exact fault codes.
- If flashing, stop immediately—misfires can damage the catalytic converter.
Is it safe to drive?
- Steady light: Yes, short distances. Book diagnostics soon.
- Flashing light: No. Stop immediately.
Renault Battery Warning Light
The red battery icon warns of charging system problems—often a weak battery or alternator fault.
How to fix it:
- Check and clean battery terminals.
- Replace the battery if old.
Is it safe to drive?
Only for a short distance. Once the battery drains, the car will stall.
Renault Oil Pressure Warning Light
The oil can icon means low oil pressure. Running an engine without oil causes catastrophic damage.
How to fix it:
- Stop immediately and check oil levels.
- Top up if low.
- If light stays on, do not drive—oil pump or seals may be failing.
Is it safe to drive?
No. Driving risks complete engine failure.
Read more about: Why my oil pressure light is on and how to fix it.
Renault Brake System Warning Light
A red exclamation inside a circle indicates brake problems. It could be low fluid, worn pads, or a system fault.
How to fix it:
- Check brake fluid.
- Inspect brake pads.
- Use Carista to check ABS/brake fault codes.
Is it safe to drive?
No. If brakes fail, you lose control.
Learn more about: What Does Your Brake Warning Light Mean?
Renault ABS Warning Light
The ABS light signals anti-lock brake system issues.
How to fix it:
- Clean wheel speed sensors.
- Inspect ABS wiring.
- Diagnose codes with Carista.
Is it safe to drive?
Yes, but without ABS safety. Get it checked soon.
Read more about the ABS warning light
Renault Airbag Warning Light
This red light shows an airbag system fault.
How to fix it:
- Check seatbelt connections.
- Scan with Carista to locate sensor or wiring faults.
- Have airbags reset by a professional.
Is it safe to drive?
Technically yes, but airbags may not deploy in a crash. Get it fixed quickly.
The airbag light just came on — now what?
Renault Coolant Temperature Warning Light
A red thermometer means overheating.
How to fix it:
- Stop and let the car cool.
- Check coolant level and leaks.
- Confirm sensor or fan faults with Carista.
Is it safe to drive?
No. Overheating can destroy the engine.
Engine’s getting hot — here’s why your coolant light glows
Renault Tyre Pressure Monitoring System (TPMS) Light
A horseshoe with an exclamation means low tyre pressure.
How to fix it:
- Inflate tyres to Renault’s recommended PSI.
- Reset TPMS if needed.
Is it safe to drive?
Short distances only. Long-term underinflation risks blowouts.
Flashing TPMS? Here’s why your tyre pressure light won’t stay off
Renault Glow Plug Warning Light (Diesel Only)
A coil-shaped light indicates glow plug or fuel injection issues.
How to fix it:
- Replace faulty glow plugs.
- Use Carista to scan for injector issues.
Is it safe to drive?
Yes, but cold starts may be harder. Fix soon.
Glow plug warning blinking? Here’s what’s going on
Renault Power Steering Warning Light
A steering wheel icon with an exclamation mark shows steering assistance issues.
How to fix it:
- Check steering fluid (if hydraulic).
- Restart the car for electronic resets.
- Use Carista to check steering module.
Is it safe to drive?
Yes, but steering will be heavy. Avoid long trips.
Power steering warning lit? Here’s what’s wrong
Renault Diesel Particulate Filter (DPF) Warning Light
This rectangle with dots means a blocked DPF in diesel Renaults.
How to fix it:
- Drive at motorway speed for 20–30 minutes.
- Use Carista to check soot levels.
- Seek professional cleaning if unresolved.
Is it safe to drive?
Yes, but ignoring it risks costly repairs.
DPF light glowing? Here’s how to unclog and restore your exhaust
Renault Stability Control (ESP/ESC) Light
This light flashes during traction control use. If stuck on, it means a system fault.
How to fix it:
- Check tyre condition and wheel sensors.
- Scan ABS/ESP with Carista.
Is it safe to drive?
Yes, but with reduced stability in slippery conditions.
Renault Service Reminder Light (Spanner Icon)
This yellow spanner signals routine Renault service is due.
How to fix it:
- Book a service.
- Reset reminder manually or with Carista.
Is it safe to drive?
Yes. But ignoring maintenance risks bigger problems.
How to reset warning lights on Renault?
Renault warning lights can be vague. The Carista OBD2 scanner and app takes the guesswork out:
- Reads and clears fault codes across all systems (engine, ABS, airbags, DPF).
- Provides live data such as battery health, coolant temperature, and fuel system status.
- Allows customization of Renault settings for convenience and comfort.
With Carista, you know exactly what’s wrong before visiting a garage. This saves money, time, and stress.
Final Thoughts
Warning lights are your Renault’s early warning system. Some are minor, others require immediate attention. Understanding them is key to safe driving.
With the Carista OBD2 scanner and app, you can quickly diagnose the meaning of any Renault warning light, decide whether it’s safe to continue driving, and fix the problem before it turns costly.
Stay safe, act early, and let Carista keep your Renault running smoothly.
Disclaimer: This article is for informational purposes only and is not a substitute for professional mechanical advice. Always consult a qualified mechanic for serious automotive issues.