What is the most common problem with the Lexus RX400h?

Common Problem with the Lexus RX400h
The most common problems reported with the Lexus RX400h include:
1. Inverter Coolant Leaks: The inverter, an important part of the hybrid engine, has been known for leaking coolant. Signs of this issue include lower liquid levels in the inverter coolant reservoir and a crusty pink substance around the inverter. This can be an expensive problem to fix, but if the vehicle is still under warranty, Lexus should cover the cost of repair.
2. Braking Problems: There have been several reports of braking issues with the RX400h. Some owners have experienced the need to press extra hard on the brake pedal to fully engage the brakes, or have encountered problems with the braking system not working properly. This is a known issue with most hybrid braking systems. If the vehicle is still under warranty, the dealer should be able to address this issue free of charge.
3. Transmission Leak: Another common problem with the 2005-2008 Lexus RX400h was a transmission leak caused by a faulty transmission cooler hose. The manufacturer addressed this issue with a revised transmission cooler hose.
4. Hybrid Battery Issues: A malfunctioning hybrid battery is a common problem experienced by RX400h owners. This can manifest in various ways, including decreased fuel economy, warning lights on the dashboard, and even stalling or failure to start. If there is suspicion of an issue with the hybrid battery, it’s important to have it diagnosed and repaired to prevent further damage to the vehicle.
5. Oil Cooler and VVTi Lines: The oil cooler lines and VVTi lines on the engine are made of rubber, and these can rupture or wear out, causing oil leaks, loss of oil pressure, and incorrect valve timing, which can make the engine run rough.
6. Other Reported Problems: Other reported issues include power steering fluid leaks, suspension issues in earlier model years, faulty brake systems, transmission problems in later model years, and surging at high speeds,,.
It’s important to note that the severity and frequency of these problems can vary among individual vehicles, and regular maintenance and prompt attention to any issues can help prevent further damage.
If you have any specific concerns about your Lexus RX400h, it’s advisable to consult with a qualified mechanic or the dealership for proper diagnosis and resolution of the issues.

Can you change a Lexus battery yourself?

Changing a Lexus battery is quick and easy, and it can also generally be done with only the minimum amount of tool. Look for a blue or whitish residue build-up around the terminal – removing this residue can sometimes solve common issues.

How much does it cost to replace the battery in a Lexus RX hybrid?

The average cost for a Lexus RX450h Hybrid High Voltage Battery Replacement is between $6,720 and $6,817. Labor costs are estimated between $371 and $469 while parts are typically priced around $6,348. This range does not include taxes and fees, and does not factor in your unique location.

How much does it cost to replace Lexus hybrid battery?

$2,000 to $8,000
Average Cost: A hybrid battery replacement cost can range from $2,000 to $8,000, depending on the vehicle’s make and model. It’s important to note that these are approximate costs, and we recommend contacting our service department for an accurate quote based on your specific vehicle.

How do I know if my Lexus hybrid system is failing?

These issues can be caused by a blown fuse, defective battery cells, and inverter problems. Symptoms of a hybrid system malfunction include poor acceleration, the vehicle running solely on fuel, poor fuel economy, and the vehicle going into limp mode.

Is Lexus 400h a good car?

Quick, fuel efficient and luxurious, the RX 400h comes with a set of attributes that just about any luxury SUV buyer will find appealing.

What are the common problems with Lexus RX400h?

Lexus RX400h Common Problems and Solutions

• Rear seat rattle. Problem: Have you noticed a rattling noise coming from the rear seats?
• Braking problems. Problem: There have been several reports of braking problems with the RX400h.
• Leaking inverter. Problem: Have you noticed that the inverter is leaking on your RX400h?

How long does the hybrid battery last in a Lexus 400h?

Under normal conditions, you can expect Lexus hybrid car batteries to last up to 150,000 miles or 15 years and sometimes even longer. Learn all about Lexus hybrid battery replacement costs and more today with Lexus of Cerritos!

How much does it cost to replace a battery in a Lexus RX400h?

Labor costs are estimated between $264 and $333 while parts are typically priced around $6,198. This range does not include taxes and fees, and does not factor in your unique location. Related repairs may also be needed. For a more accurate estimate based on your location, use our Fair Price Estimator below.

How long do Lexus RX 400h last?

While the average vehicle tends to stay on the roads for around 150,000 miles, the Lexus RX exceeds this by quite a lot. With the proper care and smart driving habits, you can be driving for 250,000 miles or more!

How many miles per gallon does a RX400h get?

Based on data from 67 vehicles, 4,768 fuel-ups and 1,386,373 miles of driving, the 2006 Lexus RX400h gets a combined Avg MPG of 23.02 with a 0.09 MPG margin of error.