Do you own a Lexus ES 250? Here's an interesting fact you must keep in mind: this entry-level luxury sedan is one of the Japanese carmaker's longest-running models, being part of Lexus's original lineup during its launch in 1990.

What else do you know about your ES 250? Do you know when its belts are broken, or when its air filter must be replaced? Your car obviously cannot talk, but it lets you know that something is wrong with it through different signs such as noises, leaks, and more. To help you take out the guesswork from diagnosing your car during your routine maintenance checks (We assume that you are doing it diligently!), listed here are four symptoms to watch out for, so you can take immediate steps to prevent small issues from turning into bigger, more expensive problems.

They indicate troubles depending on the source of the sound. A squeal may comes from a piece of metal integrated into the brake pad that gets exposed as the pad material wears out. If you hear a squeal when you press the brake lightly while driving, then it is a sign of worn-out brake shoes or brake pads.

If the whine or squeal comes from the engine bay and gets louder as the engine speed increases, it is a symptom of a broken accessory belt. Do not delay replacement, lest you will end up stranded in the middle of the road during a trip, feeling helpless and frustrated.

A loud grinding noise from your braking system is your car's way of telling you that your worn brake pads (the signs of which you chose to ignore) have been damaged to a great extent that nothing is left of them and the metal backing plate now starts to come into contact onto the brake disc. At this point, the braking power of your ES 250 is already compromised, as well as your safety on the road. This also means more expensive repairs because you will have to replace not just the brake pads but also the brake discs.

When you hear grinding noise while you make a tight turn, it is a symptom of a faulty constant-velocity joint that has to be fixed soon.

Fluid under your car may not be something to get panicked about, but it should not be ignored, either. When you see a puddle beneath your ES 250, check its color, smell, texture, and location. It is commonly water dripping from the air-conditioning condenser.

If you have had your oil changed lately and the fluid is dark and slippery, chances are the oil filter is installed incorrectly or the oil drain plug is damaged, causing oil to leak.

If the fluid is oily and clear, inspect the power steering rack and pump for power steering fluid leaks.

Do you smell something sweet from the engine? Stop daydreaming about having sweet-smelling pancakes for breakfast and examine your cooling system right away. If you just ignore it, you will end up getting stressed over an overheating engine and a useless car. It is a sure sign of a coolant leak, with the sweet scent coming from the chemical ethelyne glycol.

When inspecting your cooling system, pay special attention to the radiator hose, water pump, and gaskets. Damage to one of these components typically results in a coolant leak.

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