| When the starter is turned on | Possible reasons | What to do |
| The indicator lights on the instrument panel do not light up, the starter does not turn on. | The battery cable has become disconnected or the terminals and wire ends have become oxidized. | Check the reliability of the contact of the wire tips. If they are oxidized, clean them and tighten them. |
| The battery is discharged. | Connect a good battery to the discharged one. | |
| The battery is out of order. | Replace the battery. | |
| The indicator lights on the instrument panel are dim, the starter turns the engine crankshaft very slowly. | The battery cable terminals are poorly tightened and oxidized. | Check the reliability of the contact of the wire tips. If they are oxidized, clean them and tighten them. |
| The battery is discharged. | Connect a good battery to the discharged one. | |
| Starting the engine is difficult in high humidity conditions or after washing the car. | Ignition system malfunction: moisture in the ignition system. | Dry the high voltage wires and ignition coil. |
| Starting a warm engine is difficult. | Poor mixture formation (gas bubbles in the system). | Let the engine cool down. |
| Weak compression. | Contact the manufacturer's service station. | |
| The engine "sneezes" but does not start, or a cold engine starts with difficulty. | The electronic engine start interlock system is working. | See the chapter "Electronic engine immobilizer system". |
| Error actions during startup engine. or Fuel supply interruptions or faulty ignition system. As a result of the strong impact, the fuel supply cut-off system was activated. | see section "Starting the engine". Do not attempt to start the engine multiple times. Contact the manufacturer's service station. Contact the manufacturer's service station. (See the chapter "Fuel cut-off system in case of severe impact of the vehicle"). | |
| Vibration. | Insufficient air pressure in the tires, improper wheel balancing or damage to the wheels. | Check your tire pressure; if it is normal, contact the manufacturer's service station. |
| White smoke from the outlet or boiling liquid in the expansion tank. | Mechanical damage: cylinder head gasket is damaged, water pump is faulty. | Stop the engine. Contact the manufacturer's service station. |
| There is smoke coming from under the hood. | Short circuit or leak in the cooling system. | Stop, turn off the ignition, move away from the vehicle and call the manufacturer's service station. |
| On the move | Possible reasons | What to do |
| Oil pressure warning light is on: | ||
| - when turning or braking | Low oil level. | Add engine oil (see section "Engine oil level, oil topping up/replacement"). |
| - in idle mode | Low oil pressure. | Contact the nearest service station of the manufacturer. |
| - does not go out immediately or continues to burn as the engine crankshaft speed increases. | Insufficient oil pressure. | Stop and contact the manufacturer's service station. |
| The engine does not develop full power. | The air filter is clogged. | Replace the filter element |
| Fuel system malfunction. | Check the fuel level. | |
| The spark plugs are faulty and the adjustment is out of order. | Contact the manufacturer's service station. | |
| Unstable engine idling or engine stalling | Insufficient compression in engine cylinders (faulty spark plugs, ignition system, air leak). | Contact the manufacturer's service station. |
| The steering wheel is difficult to turn. | The drive belt is torn. Lack of oil in the power steering pump. | Replace the drive belt. Add oil to the power steering pump reservoir (see section "Power Steering Pump Reservoir Oil Level"). If the fault persists, contact the manufacturer's service station. |
| The power steering is faulty. | Contact the manufacturer's service station. | |
| Engine overheating. Coolant temperature warning light on (or the temperature indicator arrow is in the red zone of the scale). | The water pump drive belt is loose or broken. The engine cooling fan is faulty. | Stop driving, turn off the engine and contact the manufacturer's service station. |
| Coolant leak. | Check the condition of the hoses and the tightness of the clamps. Check the expansion tank: there should be coolant in it. If there is none, top it up to the normal level (after the engine has cooled down). Take precautions to avoid getting burned. For final troubleshooting, please contact the manufacturer's service station immediately. |
Radiator: When adding a large volume of coolant, remember not to add cold liquid if the car engine is very hot. After any operation on the car that requires even a partial drain of liquid from the cooling system, it should be filled with a fresh mixture prepared in the appropriate proportions. Remember: you can only use those brands of coolant that are recommended for use by the technical departments of the manufacturer.
| Electrical equipment | Possible reasons | What to do |
| The windshield wiper does not work. | The windshield wipers are frozen to the glass. Electrical circuit failure. | Release the wiper blades before turning on the wipers. Contact the manufacturer's service station. |
| The windshield wiper does not stop. | Electrical control failure | Contact the manufacturer's service station. |
| The direction indicators flash at an increased frequency. | The light bulb burned out. | Please refer to the sections "Headlights: Replacing Bulbs" or "Rear lights: replacing bulbs", chapter 5. |
| The direction indicators and hazard warning lights do not work. | Electrical circuit failure. | Contact the manufacturer's service station. |
| The headlights do not turn on or off. | Electrical circuit or switch failure. | Contact the manufacturer's service station. |
| Traces of condensation in the headlights. | This is normal. The presence of condensation on the headlight reflectors is a natural consequence of changes in outside air temperature. When the headlights are turned on, the condensation quickly disappears | |
| Whistling | The antenna on the roof is not installed correctly. | Tilt the antenna so that its end is approximately 28 cm from the roof of the car. |
Original publication on the website renaultbook.ru