Toyota Auris Won’t Start? Common Issues and Troubleshooting

Experiencing trouble starting your Toyota Auris can be frustrating. If your Toyota Auris won’t start, even after a jump start attempt, it could indicate a range of potential issues beyond just a low battery. Let’s explore a troubleshooting approach to help identify the problem before you consider a costly diagnosis.

One of the first steps when a car fails to start is often checking the battery. In this case, a battery check tool indicated “Battery OK Battery Low” which might initially suggest a simple battery issue. However, even after attempting a jump start and even swapping batteries, the Toyota Auris still refused to start. This points towards a problem that is not solely battery-related.

A crucial detail emerged during this troubleshooting process: significant oil consumption. The owner mentioned adding approximately 2 liters of oil just a month prior. Such a high oil consumption rate is unusual and warrants immediate attention. Upon checking, the oil level was found to be bone dry. While Toyota Auris models are sometimes discussed in forums regarding oil consumption, a completely dry oil level is a serious concern that can lead to severe engine damage.

Despite the lack of oil, when attempting to start the engine, there were no immediately obvious signs of catastrophic engine failure. The engine turned over smoothly, without unusual grinding or knocking noises. Furthermore, slightly pumping the accelerator pedal resulted in a small increase in engine RPM, almost as if the engine was on the verge of starting. This suggests that the engine might not be completely seized, but is likely facing a critical issue preventing ignition.

Given these symptoms, what could be preventing the Toyota Auris from starting? Here are a few areas to investigate before concluding the engine is beyond repair:

  • Oil System Failure: The extremely low oil level is a primary suspect. Running an engine with insufficient oil can cause severe damage, potentially leading to engine seizure or other critical failures. Even if the engine isn’t seized, internal damage could prevent it from starting.
  • Fuel Delivery Problems: While less likely given the engine turns over, a lack of fuel could also prevent starting. Check the fuel pump relay and fuel filter.
  • Spark Issues: Although less probable with no reported misfires prior to the starting issue, problems with spark plugs or ignition coils could prevent combustion.
  • Immobilizer or Security System: A fault in the car’s immobilizer system could prevent the engine from starting.

Before considering scrapping the vehicle and incurring the cost of an engine diagnosis, some basic checks can be performed. However, given the severe oil consumption issue, it is strongly recommended to have a qualified mechanic perform a thorough inspection. Continuing to attempt starting the engine with potentially critical oil system damage could exacerbate the problem.

Recommendation:

Due to the concerning symptom of extreme oil consumption and a no-start condition after battery troubleshooting, it is advisable to:

  1. Do not attempt to start the engine further.
  2. Consult a qualified mechanic for a professional diagnosis. Explain the oil consumption issue and the troubleshooting steps already taken.
  3. Discuss diagnostic options with the mechanic. Inquire about the cost of diagnosis versus the potential cost of engine repair or replacement.

While the absence of unusual engine noises during cranking provides a glimmer of hope, the severe oil depletion is a significant red flag. A professional diagnosis is crucial to determine the extent of the damage and the most appropriate course of action for your Toyota Auris.

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