This data is from the NHTSA — the US gov't agency tasked with vehicle safety. Complaints are spread across multiple & redundant categories, & are not organized by problem.
So how do you find out what problems are occurring? For this NHTSA complaint data, the only way is to read through the comments below. Any duplicates or errors? It's not us.
A prevalent issue observed in the Lexus CT200h and Toyota Prius V models is the internal leakage of brake accumulators, as they utilize identical part numbers. Consequently, the actuator emits a buzzing sound intermittently as it attempts to maintain the necessary gas pressure within the braking system, ultimately failing due to the leak. Numerous articles addressing this concern are available online, highlighting its significance as a safety issue. Many owners have successfully had Toyota replace the faulty part at no cost, thanks to the extended warranty covering a period of ten years or 150,000 miles, whichever occurs first. This may be attributed to the higher prevalence of Prius vehicles on the road compared to the less common Lexus CT200h. A simple search for "C1391 danger" will yield substantial information on the topic. It is disheartening, in my view and that of many others, that a problem posing a risk to public safety due to brake failure has not been adequately addressed. The sudden onset of this issue significantly reduces stopping distances. When it occurs, warning lights for ABS, traction control, and brakes illuminate simultaneously. Notably, there are no visible brake fluid leaks associated with this actuator. While Toyota provides coverage under the extended warranty, it appears that Lexus may not offer similar support, raising concerns about the safety implications discussed across various platforms.
The actuator will buzz every few seconds trying to keep pressure in the braking system to a safe operating level of gas pressure to no avail due to this leak in the actuator. After it quits buzzing from shutting the car off, you can hear the air leak hissing the pressure away. There is not much stopping distances when and after this suddenly occurs. In the process, the abs, traction control, brake, a yellow exclamation mark, lights suddenly all come on the dash at once and the brake feels like a sponge very suddenly. The brake booster pump may fail causing a deactivation of the Vehicle Stability Control system and a loss of braking assist. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 126, Electronic Stability Control Systems."" Deactivation of the vehicle stability control system or a loss of braking assist increases the risk of a crash.
I, along with many other Lexus CT200H owners have had issues regarding the brakes on the vehicle. I have code: C1391 as reported on a diagnostic tool from Autozone. This has been an issue on my vehicle for months and I-??ve read reports of this repair costing upwards to $3000!! Many of us do not have that kind of money to fix a vital function of the vehicle that rely on to keep us safe. If it-??s a common and reoccurring issue, I believe it should continue being taken care of by the manufacturer. There was a recall in the past, but it isn-??t fair for those who have had this issue after the recall and are responsible to pay this ridiculous amount afterwards!
A common problem with these Lexus ct200h, as well as Toyota Prius V models, are that the brake accumulators begin to leak internally, as they share the same part numbers. Therefore, the actuator will buzz every few seconds trying to keep pressure in the braking system to a safe operating level of gas pressure to no avail due to this leak in the actuator. After it quits buzzing from shutting the car off, you can hear the air leak hissing the pressure away. There are many articles on this issue online as this is a major safety concern. Many have had Toyota replace the part free of charge as well due to the extended 10 year, or 150k miles, in whichever comes first. warranty. This may be perhaps because there are several more Prius on the road than this rare Lexus CT200h. There are no external brake fluid leaks involved. for this actuator. Toyota covers it under extended warranty, although it appears as though Lexus does not(?), this is a major safety hazard and concern for a heavy amount on several different websites. The trouble code is: C1391. I called Lexus of Austin and was told there are no recalls, after looking up my VIN#. Searching for -??c1391 danger-?? will yield many incidents of this. This is quite a serious issue that needs government interference. Thank you for taking the time to read this.
2012 Lexus ct200H has the same brake booster, assembly issue all 3rd generation Toyota prius's have. The ABS/brake system lights all come in, and brake functionality is limited. Attached is a scan of the issue, I have since called Lexus and notified them of the issue.
There is a well known flaw with Toyota hybrids that Toyota needs to address and fix. When you brake to come to a stop, if they car encounters bumps or potholes, the brake pressure will momentarily decrease and the car will surge forward. It does not appear to affect certain vehicles, but rather all hybrids. It can lead to a pedestrian being hit or other accident. It is most disconcerting to feel the car lurch forward while braking to a stop. Please investigate and put pressure on Toyota to issue a recall and repair.
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- Shreveport, LA, USA