Range Rover won’t start and the hazards are flashing: how to fix

As a Range Rover owner and mechanic, I’m all too familiar with the well-known reputation of these luxurious SUVs for experiencing reliability issues.

So, it comes as no surprise when someone complains when their Range Rover won’t start and the hazard warning lights are flashing. In fact, I’ve experienced this problem myself.

But don’t worry, in this article, I’ll provide you with some useful insights on how to diagnose and fix this issue. So, stick around till the end and learn how you can get your Range Rover back on the road.

What models are affected?

Signs and symptoms

When your Range Rover won’t start and the hazards are flashing, it’s usually a sign of a serious issue with the car.

The most common signs and symptoms of this problem are:

  • The engine won’t crank when you turn the key
  • The hazards start flashing on their own
  • The dashboard lights turn on, but the engine won’t start

If you notice any of these signs after turning the key, then there’s a high probability that your Range Rover has some form of electrical wiring or voltage issue.

List of possible OBD codes

If your Range Rover is equipped with an OBD II system, you can refer to the following diagnostic codes to diagnose the issue:

  • P0562 – System Voltage Low
  • P0563 – System Voltage High
  • U0122 – Lost Communication With Vehicle Dynamics Control Module

Common causes

There are several reasons why your Range Rover won’t start and the hazard warning lights are flashing, and some of the most common causes include:

  • Dead battery: A dead battery is the most common reason for your Range Rover not starting. If you’re sure that the battery is dead, then jump-start your car to start the engine.
  • Faulty starter: A faulty starter is another common reason for a car not to start. If your battery is fully charged but your engine still won’t start, then the starter motor may have failed.
  • Bad ignition switch: If your ignition switch is defective, then it won’t allow the electrical contacts to connect, and the engine won’t start.
  • Failing alternator: The alternator is responsible for charging the battery and powering the electrical system. If it’s failing, then your battery won’t charge, and the engine won’t start.
  • Fuel System problems: A faulty fuel pump can prevent fuel from reaching the engine. Alternatively, clogged fuel injectors can lead to the same issue.
  • Bad starter relay: The starter relay is responsible for sending power to the starter motor when you turn the key. A faulty relay could prevent power from reaching the starter motor.

Can it be fixed without a mechanic?

In some cases, you may be able to fix the problem without the help of a mechanic. However, if you’re not sure about the cause of the issue, it’s always better to take your car to a professional mechanic.

Parts you’ll need to fix it

If the issue is related to the battery, then you’ll require a jump starter kit or a new battery. If the starter motor or starter relay is the problem, then you may need a replacement.

Tools you’ll need to fix t

The tools you’ll need to fix the issue will depend on the cause of the problem.

However, some of the most common tools you may need include:

  • Socket set
  • Wrench set
  • Screwdriver set
  • Multimeter
  • Fuel pressure gauge (if the issue is related to the fuel system)

How to fix it

If you’re confident about what’s causing the issue, then follow these steps to fix it:

  1. Check the Battery: If your battery is dead, jump-start your car. If the battery is weak, replace it.
  2. Check the Starter Relay: If the battery is fine, then check the starter relay by performing a voltage test. If it’s defective, replace it.
  3. Check the Starter Motor: If the starter relay is fine, then perform a voltage test on the starter motor. If it’s not getting power, replace it.
  4. Check the Ignition Switch: If the starter motor and relay are working fine but the engine still won’t start, then the ignition switch may be the problem.

Potential Alternative Causes

Other causes of the issue might include faulty spark plugs, damaged alternator wires, or a clogged fuel filter.

FAQs

What should I do if my Range Rover won’t start?

If your Range Rover won’t start, and the hazards are flashing, the issue could be related to your battery, starter motor, or starter relay. Follow the above steps to diagnose and fix the issue.

What can cause the hazards to start flashing in my Range Rover?

A dead battery, a failing alternator, or a bad starter relay can cause the hazards to start flashing.

Can I fix this problem on my own without visiting a mechanic?

Yes, you can fix this problem on your own if you’re confident about what’s causing the issue. However, if you’re unsure, it’s always better to visit a mechanic.

Summary

So, if you’re experiencing the problem of Range Rover won’t start hazards flashing, it could be caused by a dead battery, faulty starter, or bad ignition switch.

However, before attempting to diagnose or fix the issue, it’s always better to consult a professional mechanic.

Last updated and verified on 4th September 2023

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