There are some  technical checks which you will be asked  on a Driving Test 3 picked at random by the driver tester.  The driver tester may not always ask for the bonnet of the vehicle to be raised, if for example it was raining heavily they may ask for the lifting the bonnet of the vehicle.

The following is the list  checks you may be asked.

How to check the engine oil

Where to put the engine oil

Were is Brake fluid and how to check the level of the Break Fluid 

How to top up Windscreen washer fluid

How to check Engine coolant Level

How to check  Power steering fluid level 

 How to use Horn Correctly 

How to turn on All Lights

How to check Tyres 

These first checks below are conducted under the bonnet of the car. It is important to note that you must not touch anything under the bonnet, just point to or give a brief explanation of what is asked.

How to check the oil ; Use of the dipstick. Park your vehicle on a level surface and switch off the engine. Take the dipstick out and wipe it clean. Reinsert it fully and then remove it once again. There are high and low markings on the dipstick and the oil should stain somewhere between those markings indicating if there is sufficient oil present.

Where to put the engine oil ; This is usually just a matter of pointing to the oil filler cap.

Brake fluid ; You may just be asked to point out where the Brake fluid is or you could be asked how would you check the level of the brake fluid. The brake fluid has    maximum and minimum levels marked on the sides. If the fluid level is between these levels you have sufficient amount.

Windscreen washer fluid ; Again usually just a matter of pointing to the water bottle 

Engine coolant ; Again you may just be asked to point out the coolant bottle   If asked how to check the level of coolant you would say that the maximum and minimum levels marked on the sides. You would know if you had sufficient coolant if you see it somewhere between these levels.

Power steering fluid ; If you have a power steering bottle  is in most cases transparent with maximum and minimum levels marked on the sides. If the fluid is between these levels you have sufficient. 

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Horn ; You may be asked to press the horn.

Lights

 To check the lights you would just say you turn them on and move around the car and have a look to see if all bulbs are working.

To check the brake lights when you are on your own you say that you would reverse towards a reflective surface and press the brake pedal ……. you can see in your rear view mirror if a bulb is not working.

 When sitting in the car if your indicator begins to flash quicker it signifies that an indicator bulb is not working.

Tyres

 A visible inspection of the tyre threads. The tyre must not appear smooth or worn. The thread depth must be at least 1.6 mm deep.

 Check the sidewalls of the tyre to ensure no cuts / abrasions or bulges on them.

 Look at the bottom of the tyre where it contacts the ground. If it appears to be spread out this is an indication that it is soft and should be taken and pumped up – about 32PSI  is recommended for the size of tyre on the average family car.