Many of us drive around in our cars blissfully unaware of the useful colour coded guides that are often under the bonnet. This is when mechanics know they are dealing with a car owner who probably hasn’t checked anything under their bonnet for a while – but some of us don’t know what we should be looking for under there. The tyre depth should be over the minimum amount of 1.6mm. How to use bonnet in a sentence. The reading should be closer to the max. How to Check out a Used Car Before Buying It. than the min. To check the transmission on a car with a dipstick, keep the car running and put it in park. mark. Please note some cars may not have a power steering reservoir. Wipe with a clean cloth then pop back in and remove to check the level. Mechanics occasionally encounter bonnets that are seized closed, or have a broken release mechanism. Basic Checks Under A Cars Bonnet A guide to the simple checks you do for cars under the front bonnet. Bonnet definition is - a man's or boy's cap. There are a number of car checks you can perform both around the car and under the bonnet to help keep it in good running order and prevent a breakdown. When asked: how to carry out a safety check on the car tyres. If the smoke is coming from under your hood, that probably means you ignored white smoke coming out of the tailpipe, and now your engine is overheating. Just drop the bonnet from a height of about half a meter to close. 1. Ensure the engine is cold and car is on flat ground to enable you to get an accurate reading. That's ridiculous. Identify the dipstick pull it out and clean it , put the dipstick back in and pull it out again. The tyres should be inflated to the correct tyre pressure. You will not have to physically perform these technical checks just show the location of each safety reservoir cap and describe how you would check the fluid level for each. Author's Note: Top 5 Signs of Engine Trouble You’ll be asked 2 vehicle safety questions during your car driving test.. The transmission dipstick is usually located in the front of the engine on front-wheel drive vehicles and at the back of the engine on a rear-wheel drive car. The non-mechanics among us were surprised to be shown that the fluids you are able to check … a man's or boy's cap; a brimless Scottish cap of seamless woolen fabric; a cloth or straw hat tied under the chin and worn by women and children… It's best to do this when the car is cold. Don’t push down on the bonnet as you may dent it. Purchasing a used car can seem confusing, and with so many things to consider, it can also feel overwhelming. When checking the tyres you should check the walls of the tyres making sure there are no cuts or bulges.