The dashboard warning light that could wreck your car – and cost you £4,000
Spot the signs before it's too late. Understanding your transmission temperature light could save your car - and your bank account!

With dozens of different symbols lighting up modern car dashboards, it's no wonder drivers can feel overwhelmed. From battery warnings to boot open alerts, the sheer number of icons can make it hard to know which ones matter - and which ones could cost you dearly.
But there's one lesser-known warning light that could spell disaster if ignored: the transmission temperature warning light.
This warning light, often shown as a gear with a thermometer inside, indicates that your transmission fluid is overheating. It's not one most people recognise but ignoring it can lead to serious and expensive damage.
Transmission fluid keeps your gearbox cool and lubricated. If it overheats, it can't do its job properly, leading to increased friction, burnt-out components, and even total transmission failure.
Gearbox replacements are among the most expensive repairs a driver can face, with costs typically ranging from £800 to £4,000*, depending on the make and model of the vehicle.
This warning light typically appears during heavy driving conditions like towing, driving uphill, or sitting in traffic on a hot day. If it lights up, pull over immediately, turn off the engine, and let the car cool down.
Don't try to 'push through' or get to your destination, as even a few extra miles can be the difference between a quick fix and a major repair.
To avoid this costly mistake, it's recommended that you stay on top of regular servicing to keep your transmission fluid in check, driving gently to reduce strain on the gearbox, and familiarising yourself with all dashboard symbols. Your dashboard is there to protect you! If in doubt, check your manual or speak to a mechanic. It could save you thousands!
Knowing what your dashboard is telling you not only helps keep you safe on the road but can also save you from costly repairs. Find out what other dashboard lights you should never ignore here! 👈
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