During MOT (APK) tests, many Renault Kangoos fail due to insufficient tyre tread, non-functioning brake lights, and windscreen wipers that provide inadequate visibility. These seemingly minor defects lead to immediate failure and cost extra time and money. In this article, you will read about the most common problems and how you can prevent them or repair them yourself.
Common reasons for MOT failure regarding Kangoo tyres
The Renault Kangoo is widely used as a commercial or family vehicle, often with varying loads. This results in uneven tyre wear and faster degradation. The most common reasons for MOT failure relate to insufficient tread, unevenly worn tyres, and visible damage.
While the legally required minimum tread depth is 1.6 millimetres, experts advise replacing tyres at 3 millimetres, especially for safety on wet roads. Check the tread at multiple points across the width of the tyre, as wear on the inside or outside occurs faster due to incorrect alignment or insufficient tyre pressure.
Many owners report only discovering that their tyres are insufficient during the MOT. A simple visual check prevents this problem. When doing so, look not only at the tread depth but also at these signs:
- Unevenly worn tyres on the inside or outside indicate incorrect alignment
- Bulges or distorted rubber layers can occur due to low tyre pressure
- Cuts, cracks, or visible cord layers are immediate grounds for failure
- Irregular wear caused by an out-of-balance tyre
Tyre pressure and varying loads
Low tyre pressure leads to faster wear at the edges and increases the risk of vibrations. Measure the pressure when the tyres are cold and compare it to the recommended value in the owner’s manual or on the sticker in the door frame. Keep the load in mind: a heavily loaded Kangoo requires higher pressure than an empty vehicle.
By checking and inflating regularly, you significantly extend the lifespan of your tyres. This also prevents unpleasant surprises just before the MOT. Also, remember to check the pressure again after switching from winter tyres to summer tyres or vice versa.
Brake light not working on the Kangoo: replacement steps
A faulty brake light is one of the most common reasons for MOT failure. In the Kangoo, this happens regularly and is often due to a broken bulb, a poor earth connection, corrosion in the socket, or a faulty brake pedal switch.
Start by identifying the source of the problem. Check whether it is one brake light or both. If one side is not working, the cause is likely the bulb or the connection. If both lights do not respond when pressing the brake pedal, the switch near the brake pedal or a fuse might be faulty.
Step-by-step replacement of a brake light bulb
- Open the tailgate or remove the interior panel on the inside of the rear light unit
- Turn the bulb holder anti-clockwise and pull it out of the socket
- Replace the bulb with a new one of the same power and type
- Check the socket and contact points for oxidation or corrosion
- Replace the bulb holder and test whether the brake light works now
If the brake light still does not work after replacing the bulb, check the earth connection. User experiences on car forums show that a poor earth contact is often the real cause of a persistent brake light failure. Oxidation or a poor connection in the light housing can cause the malfunction. Clean the contact points with sandpaper or contact spray and test again.
Checking the brake pedal switch
The brake pedal switch is located above the brake pedal and activates the brake lights when pressed. A faulty switch means the brake lights will not come on at all. You can test the switch by temporarily bypassing it or using a multimeter to measure if power comes through when pressed. Replacing the switch is usually simple and takes only fifteen minutes.
Always check the fuses if several electrical functions fail at the same time. You will usually find the fuse box under the dashboard on the driver’s side. The owner’s manual indicates which fuse is responsible for the brake light circuit.
Wiper visibility inadequate: repairs for the MOT
Windscreen wipers that streak, clean poorly, or skip large parts of the screen lead directly to MOT failure. The inspector strictly checks for adequate visibility and functional wipers. In the Kangoo, you often see problems with worn wiper blades and wipers that do not cover the screen fully.
Worn rubber develops due to UV radiation, moisture, and dirt. Replace the wipers at least once a year, or more often if you notice they are no longer doing their job well. Pay attention to the correct size: the driver’s side often has a longer wiper than the passenger side.
When replacement is not enough
Sometimes the problem lies not only with the rubber, but also with the wiper arm or the drive mechanism. Check if the wiper arm puts sufficient pressure on the windscreen. A distorted arm does not make sufficient contact and leaves smudges. The wiper motor may also weaken, causing the movement to become sluggish or stop when facing resistance.
Clean the windscreen thoroughly before installing new wipers. Dirt, resin, or insect remains reduce the effectiveness of new rubber and accelerate wear. Use a glass cleaner and possibly a special windscreen degreaser for stubborn dirt.
How to prevent MOT failure through maintenance
Many Kangoo owners only discover there is something wrong with their tyres, lights, or wipers during the MOT. By performing a number of simple checks yourself, you avoid failure and save costs and time. Plan a check in the weeks before the MOT and go through these points:
- Check the tread depth at multiple points on each of the four tyres
- Test all lighting, including brake lights, by asking someone to look behind the car while you press the brake pedal
- Clean the windscreen and test the wipers in all settings
- Check the tyre pressure and adjust for varying loads
- Look for visible damage to tyres, such as cuts or bulges
These checks take less than half an hour but can save you a re-test at the MOT. Especially with a vehicle that is used intensively, such as the Kangoo, preventive maintenance pays for itself quickly.
‘ A quick check before departure prevents surprises and increases road safety. ’
Practical tips for longer-lasting components
In addition to replacing faulty parts, you can extend their lifespan through proper maintenance and conscious use. Checking tyre pressure on cold tyres provides a more reliable result than measuring after a long drive. Wiper blades last longer if you clean them occasionally with lukewarm water and a soft cloth.
For brake lights, the rule is: check regularly that all lights are working, even if you do not see a warning on the dashboard. Some models do not provide a notification for a single faulty brake light. A quick check before departure prevents surprises and increases road safety.
If you feel vibrations while driving, have the tyres balanced and the alignment checked. This prevents uneven wear and ensures a more comfortable ride. Also, when replacing one tyre, it is wise to place the new tyre on the rear axle and move a better old tyre to the front axle, because grip at the rear is more important for stability.
More information about the Renault Kangoo
On the Carnews website, you will find many more tips and experiences regarding the Renault Kangoo and other models. From engine problems to maintenance tips and user experiences: discover what other owners encounter and how to keep your car in top condition. Stay informed and avoid unpleasant surprises by checking regularly and reading up on the subject.
Frequently asked questions
In the Renault Kangoo, irregular wear due to incorrect tyre pressure and alignment problems occurs relatively often, especially if the vehicle is frequently driven with varying or heavy loads. Pay attention to tyres that wear faster on the inner or outer edge than in the middle; this could indicate incorrect alignment or incorrectly adjusted suspension. Cupping or sawtooth wear on the rear tyres can also occur in commercial vehicles if the shock absorbers or balancing are not optimal. An enthusiast can therefore regularly compare the tread depth across the full width of the tyre and watch for noticeable ridges or irregularities in the tread.
An enthusiast can first check whether one or all brake lights are failing by having someone operate the lights while they walk around the car. Then, they can remove the brake light bulbs from the rear light units, visually check the filament, and replace the bulbs if necessary. After that, they can inspect the sockets and earth connections in the light housing for corrosion or loose contacts and clean or secure them. If all lights and contacts seem fine but no brake lights work, they can check the brake pedal switch and the corresponding fuse(s).
Check the tyre pressure monthly with cold tyres, the tread depth, and any cracks or bulges, and have the wheels balanced and alignment checked if vibrations occur. Keep an eye on the load of the Kangoo and rotate the tyres in time to limit uneven wear. Regularly test all brake lights (including the high third brake light) and replace faulty bulbs immediately. When performing maintenance, clean the sockets and earth connections and have the brake pedal switch and fuses checked if failures recur.
Both tyre problems and brake light failures can be caused by poor or delayed maintenance, such as not regularly checking tyre pressure and lighting. Additionally, corrosion or poor earth/contact points at the rear of the car can contribute to both unreliable lighting and irregular tyre wear (via malfunctioning lighting or trailer systems). Also, frequent driving with an overload or improper loading can cause extra tyre wear as well as problems in the rear light units (due to vibrations and stress).
For intermittent brake light failures, in addition to the bulb itself, check earth points and plug connections for oxidation, bend the contact tabs in the socket slightly if necessary, and use a multimeter to measure if voltage drops under load. Test the brake pedal switch by removing it, moving it mechanically, and measuring directly for continuity instead of only checking for operation via the pedal. For uneven tyre wear, a combined check of tyre pressure, alignment, and balancing is useful, followed by inspection of steering ball joints, wishbones, and suspension bushes for play. Mark new tyres and record mileages to be able to evaluate the wear pattern over several thousand kilometres.