DRIVERS are only just learning what the squiggly symbol on their car dashboard means.
Understanding the meaning of the light could help prevent costly repairs if motorists know how to act.

Serious damage can occur if drivers fail to spot important warning signs, according to Gabriel Hambleton from car detailing supplier Gold Label Care.
The has suggested that warmer weather, heavier traffic and neglected maintenance can all put extra strain on engines.
As one of the least recognised symbols, the squiggly line is crucial for preventing breakdowns.
The resembles a thermometer over wavy lines and if it lights up the engine is overheating.
Hambleton said: “The , resembling a thermometer over wavy lines, is one of the least recognised dashboard symbols but crucial for .
“If it lights up, the engine is overheating and ignoring it could lead to breakdowns and costly repairs.
“A high temperature reading or the gauge spiking into the red means the engine is overheating.
“If it lights up, it indicates the engine is overheating. Ignoring this warning could leave drivers stranded and .
“Steam from the hood or a burning smell also indicate overheating, even if the warning light isn’t on, and should be addressed right away.”
should stay calm and pull over safely if they notice the alert.
They should then turn off the , allowing it to cool for at least 30 minutes before checking anything.
Hambleton added: “If steam or smoke is present, don’t open the radiator cap immediately, as the system is pressurised and can cause burns. Wait until it’s fully cooled before .”
could be the cause of an overheating engine whilst antifreeze can degrade over time so it is important to replace it every three to five years.
Hambleton also said: “Thumping or ticking sounds coming from the engine could indicate a malfunctioning thermostat or issues with the . These sounds could suggest that the engine is overheating and should be addressed quickly to prevent serious damage.
“Coolant leaks are another common cause. If you spot one, fix it before refilling to prevent further damage. While water can be used in emergencies, always replace it with the correct coolant mix as soon as possible.
“If overheating persists despite , the issue may lie with the radiator or cooling fan. A mechanic should inspect the system to prevent further damage.”
The has left many stumped.
Some have even taken to to seek answers.
One user wrote: “What does the symbol that looks like a thermometer/tree in water mean in a car?”
Another said: “I'm going to just keep ignoring the squiggly lines light on my dashboard. I don’t need no more unexpected bills this month.”
But others were quick to help out, explaining what the symbol means.
One tweet read: “Squiggly line under a thermometer symbol – you need to check your coolant asap.”
The light looks like a thermometer and has wavy lines at the bottom.
