Clio 4 owners often see a yellow “Service” message on the cluster. It can indicate routine maintenance is due or point to electronic faults.

Symptoms

• Yellow “Service” message on dash
• Sometimes accompanied by engine warning light
• Possible loss of some electronic functions

Main causes

• Service interval reminder overdue
• Faulty sensors (MAP, MAF, O₂)
• ECU software glitch/needs update
• Low battery voltage

Solutions

• Complete overdue maintenance and reset service reminder
• Read fault codes and replace faulty sensors
• Update ECU software if available
• Test/replace weak battery

Advice

If the message persists with other lights, perform full diagnostics to avoid missing faults.