Peugeot iOn Indicators: Red Warnings (2016-present)

Red warning lamps on your Peugeot iOn either show you that something needs your attention straight away, such as an open door or an unfastened seat belt, or warn you about a fault that should not be ignored. Some red lamps also simply confirm what the car is doing, such as charging the main battery.

This guide covers the first-generation Peugeot iOn (iOn I, 2016-present) and applies to vehicles built from 1 August 2017. Some lamps depend on the version or equipment of your car, so you may not see every one of them.

Quick Reference

Main battery charge (normal or fast)

This is the main battery charge warning lamp. It comes on during normal or fast charging, and what it means depends on whether it is steady or flashing.

When it is steady, the main battery is being charged. When it flashes, the recharging cable is connected to the car's socket, but the main battery is not being charged.

What to do:

If the lamp is steady:

• No action is needed. The lamp goes off once charging is complete.

If the lamp is flashing:

• Check that the recharging cable is properly connected.

Ancillaries battery charge

This is the ancillaries battery charge warning lamp. When it stays on, there is a fault in the ancillaries battery charging circuit, for example dirty or loose terminals or a converter fault.

What to do:

• The lamp should go off when you start the engine.
• If it does not go off, contact a PEUGEOT dealer or a qualified workshop.

Front seat belt not fastened / unfastened

This is the front seat belt warning lamp. It comes on steady, then starts flashing with an audible signal, when the driver or front passenger has not fastened their seat belt or has unfastened it.

What to do:

• Pull the seat belt strap across you.
• Insert the tongue into the buckle until it is fastened.

Rear right seat belt unfastened

This is the rear right seat belt warning lamp. It comes on steady when the rear right passenger has unfastened their seat belt.

What to do:

• Ask the rear right passenger to pull the seat belt strap across them.
• Make sure they insert the tongue into the buckle.

Rear left seat belt unfastened

This is the rear left seat belt warning lamp. It comes on steady when the rear left passenger has unfastened their seat belt.

What to do:

• Ask the rear left passenger to pull the seat belt strap across them.
• Make sure they insert the tongue into the buckle.

Airbags

This is the airbag warning lamp. It comes on for a few seconds when you switch on the ignition and should then go off.

If it stays on steady, there is a fault with either the airbag system or the pyrotechnic seat belt pretensioner system.

What to do:

If the lamp comes on when you switch on the ignition:

• Check that it goes off after a few seconds.
• If it does not go off, contact a PEUGEOT dealer or a qualified workshop.

If the lamp stays on steady:

• Have the system checked by a PEUGEOT dealer or a qualified workshop.

Door(s) open / Boot open

This is the open door and boot warning lamp. It comes on steady, together with an audible signal, when a door or the boot is still open.

What to do:

• Close the door or boot that is open.

Parking brake

This is the parking brake warning lamp. It comes on steady when the parking brake is applied or has not been released properly.

What to do:

• Keep your foot on the brake pedal and release the parking brake to switch off the lamp.
• Follow the safety recommendations in your handbook.
• For more details, see the parking brake section of your handbook.

Braking

This is the braking warning lamp, and it can come on in two different situations.

If the braking warning lamp comes on steady on its own, the brake fluid level has dropped significantly, or there is a fault with the braking assistance system. If the braking warning lamp comes on steady together with the ABS warning lamp, the electronic brake force distribution (EBFD) system is faulty.

What to do:

If the braking warning lamp is on by itself:

• Stop as soon as it is safe to do so.
• Top up the brake fluid with fluid approved by PEUGEOT.
• If the problem continues, have the system checked by a PEUGEOT dealer or a qualified workshop.

If the braking warning lamp is on together with the ABS warning lamp:

• You must stop as soon as it is safe to do so.
• Have the system checked by a PEUGEOT dealer or a qualified workshop.

If You're Not Sure

If a red lamp comes on and you are not sure what it means, stay calm and stop somewhere safe when you can. Check your Peugeot iOn handbook for the lamp you are seeing, and if it points to a fault, contact a PEUGEOT dealer or a qualified workshop for advice.

Red lamps on your Peugeot iOn are worth taking seriously, but many of them only need a quick action from you, such as fastening a belt or closing a door. Get to know what each one means and you will know exactly how to respond when one appears.

Related guides: Peugeot iOn (2016-present) orange warning lights, Peugeot iOn (2016-present) green and blue warning lights and all Peugeot iOn guides.