The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.
A failing catalytic converter can cause a vehicle to fail emissions tests and turn on the check engine light. The exhaust might have an unusual smell. A restricted catalytic converter can result in a loss of engine power.
» LEARN MORE: How to tell if your catalytic converter is failing
The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. The canister may also cause difficulty starting the engine, a rough idle, and poor fuel mileage.
The check engine light will illuminate any time there is a failed EVAP system test. This will be indicated by the various on-board diagnostics trouble codes that are stored in the vehicle's memory. Also, in some models, there may be a popping sound accompanying the check engine light, as the leak detection pump continuously attempts to pressurize the fuel tank. A fuel tank leak may also cause difficulty starting the engine, a rough idle, and poor fuel mileage. When a fuel tank is simply corroded to the point of failure, the exterior tank condition rarely shows damage. The inside of the fuel tank will be rusted or corroded, and rust flakes or other debris may be floating in the fuel.
For most vehicles, the only symptom will be a check engine light or fuel tank filler cap light illuminating on the driver instrument cluster. This is to signal that there is an evaporative emissions (EVAP) leak. In some situations, the vehicle may take longer than normal to start, or, more rarely, the engine may not start at all. on-board diagnostic (OBD) trouble codes will refer to EVAP system failures such as a small or massive EVAP system leak. Lastly, the powertrain control module may notice a lean running condition, which could even lead to random and infrequent misfires.
When faced with a gas smell in your 2012 Lexus RX350, it's essential to approach the diagnosis methodically to identify the root cause effectively. Start with a thorough visual inspection of the vehicle, focusing on areas under the car, around the fuel tank, and the engine compartment for any visible signs of fuel leaks. Pay particular attention to the fuel lines and injectors, as these components are common culprits for leaks. If you notice any cracks or loose connections, these may need immediate attention. Next, examine the evaporative emissions system, including the charcoal canister and purge valve, as issues here can also lead to gas odors. Additionally, don’t overlook the exhaust system; any leaks or damage could allow gas fumes to enter the cabin. Lastly, consider your refueling habits; overfilling the gas tank can lead to spills that create a lingering smell. By following this diagnostic approach, you can systematically rule out potential issues and determine whether professional assistance is necessary for repairs.
When you detect a gas smell in your 2012 Lexus RX350, it's crucial to investigate the issue promptly, as it could indicate several underlying problems. One of the most common culprits is a fuel leak, which may originate from components like fuel injectors, fuel lines, or even the fuel tank itself. Additionally, a faulty or improperly secured fuel cap can allow fuel vapors to escape, contributing to the odor. Another area to consider is the evaporative emissions control system, which is responsible for capturing and recirculating fuel vapors; any malfunction here can lead to noticeable gas smells inside the vehicle. Furthermore, an exhaust system leak, particularly near the catalytic converter or muffler, can also produce a gas-like odor in the cabin. Lastly, engine performance issues, such as running too rich, can result in unburned fuel entering the exhaust system, exacerbating the smell. By understanding these common problems, you can take the first steps in diagnosing the issue yourself, ensuring both your safety and the proper functioning of your vehicle.
Addressing a gas smell in your 2012 Lexus RX350 is not just a minor inconvenience; it is a pressing safety concern that requires immediate attention. Ignoring this issue can lead to severe consequences, including the risk of fire or explosion due to gasoline leaks, which can ignite from even the smallest spark. Additionally, the health risks associated with inhaling gasoline fumes are significant, as they can cause dizziness, headaches, and nausea, with prolonged exposure potentially leading to more serious health complications. Furthermore, gasoline leaks can have detrimental effects on the environment, contaminating soil and water sources if left unaddressed. Therefore, it is imperative to take any gas smell seriously and act swiftly to investigate and resolve the issue, ensuring not only your safety but also the health of those around you and the environment.
See what others are asking about their Lexus RX350. Get answers from RepairPal's community of auto experts and enthusiasts.
Read about related problems experienced by other Lexus RX350 drivers like you.