What every red warning light on the Peugeot 508 II (2023-present) means and what to do, from STOP and oil pressure to braking and doors.
Red warning lamps on your Peugeot 508 are the ones to take most seriously. If a red lamp comes on, there may be a fault that needs further investigation, and the lamp may be joined by an audible signal and a message on the screen. Some red lamps come on for a few seconds when you switch on the ignition. This is normal, and they should go off as soon as the engine starts.
This guide covers the second-generation Peugeot 508 (508 II) built from 1 March 2023 onwards, based on handbook edition ed01-23. Some lamps depend on the version or equipment of your car. For example, the rechargeable hybrid lamp only applies to hybrid models.
Scroll the table sideways.
| Warning | Urgency | In short |
|---|---|---|
| STOP | Stop safely, get help | Serious fault, stop the car now |
| Maximum coolant temperature | Stop safely, get help | Cooling system temperature too high |
| Engine oil pressure | Stop safely, get help | Engine lubrication system fault |
| System malfunction (Rechargeable hybrid) | Stop safely, get help | Rechargeable hybrid system is faulty |
| 12 V battery charge | Stop safely, get help | 12 V battery charging circuit fault |
| Door(s) open | Action needed from you | A door or the boot is open |
| Seat belts not fastened/unfastened | Action needed from you | A seat belt is not fastened |
| Active Suspension Control | Get it checked soon | Active suspension system malfunction |
| Electric parking brake | Stop safely, get help | Brake applied, or flashing for a fault |
| Braking | Stop safely, get help | Low brake fluid or EBFD fault |
This lamp shows the STOP symbol in red.
It stays on together with another warning lamp, and you will also see a message and hear an audible signal. It means a serious fault has been detected with the engine, braking system, power steering or automatic gearbox, or there is a major electrical fault.
What to do:
This red lamp warns you about the engine coolant temperature.
When it stays on, the temperature of the cooling system is too high.
What to do:
This red lamp relates to the engine oil pressure.
When it stays on, there is a fault with the engine lubrication system.
What to do:
This red lamp is fitted to rechargeable hybrid versions of the 508.
When it stays on, the rechargeable hybrid system is faulty.
What to do:
This red lamp relates to charging of the 12 V battery.
When it stays on, the battery charging circuit is faulty. This could be caused by dirty battery terminals or a loose or broken alternator belt, for example.
What to do:
This red lamp warns you about an open door or boot.
It stays on with a message showing which door or boot is affected. It means a door or the boot is not properly closed. If you are driving faster than 6 mph (10 km/h), an audible signal sounds as well.
What to do:
This red lamp is the seat belt reminder.
It stays on or flashes, with an audible signal that gets louder. It means a seat belt has not been fastened or has been unfastened.
What to do:
This red lamp relates to the Active Suspension Control system.
When it stays on, a malfunction of the active suspension system has been detected.
What to do:
This red lamp shows the status of the electric parking brake.
When it stays on, the electric parking brake is applied. When it flashes, there is a fault with applying or releasing the brake.
What to do:
If the lamp stays on:
If the lamp flashes:
This red braking lamp warns you about the braking system and can come on in two situations.
If the braking lamp stays on by itself, the brake fluid level in the braking circuit has dropped significantly. If the braking lamp stays on together with a second warning lamp, the electronic brake force distribution (EBFD) system is faulty.
What to do:
If the braking lamp is on by itself:
If the braking lamp is on with the second warning lamp:
If a red lamp comes on and you are not sure what it means, stay calm and stop somewhere safe as soon as you can. Check whether a message has appeared on the screen, as it often explains the problem. If you are still unsure, contact a PEUGEOT dealer or a qualified workshop for advice.
Red lamps on your Peugeot 508 are there to protect you and your car, so never ignore them. Get to know what each one means, act quickly when one appears, and you will be well prepared if something goes wrong.
Related guides: Peugeot 508 II (2023-present) orange warning lights, Peugeot 508 II (2023-present) green and blue lights, Peugeot 508 Indicators: Red Warnings (general guide) and all Peugeot 508 guides.
In the 508, the instrument panel and the 10-inch touchscreen work together. The trip computer data sits in front of you, while apps such as Energy live on the central screen. This guide explains how to check your trip...
The Peugeot 508's instrument panel constantly reports on the car's health: when the next service is due, whether the oil level is right, how hot the engine is and, on BlueHDi diesels, how far you can go before the...
Not every lamp on your Peugeot 508's dashboard is a warning. Green, blue and white/grey symbols mostly confirm that something is switched on: your lights, a driver assistance system or a hybrid feature. Knowing them...
