Lexus IS Fuel System problems by year

Safety Risk: My safety was put at extreme risk. At 7:30 PM in pitch-black conditions, I was traveling at 60 mph on the interstate when the engine suddenly died. Because the dashboard gauge falsely indicated a half-tank of fuel, I had zero warning. I had to desperately coast a dying vehicle across dark, active highway lanes toward an exit. I could not make the exit and was forced onto the shoulder, stopping dangerously close to active traffic. Stranding a powerless vehicle on a dark, high-speed interstate shoulder leaves occupants highly vulnerable to a catastrophic rear-end collision. Warning Signs & Symptoms: There were absolutely no advanced warning lamps, low fuel lights, or check engine messages prior to the failure. The dashboard gauge actively misled me by showing a half tank of gas. The vehicle gave zero indication of an issue until it suddenly sputtered and lost acceleration at high speed. The car then shut itself off completely on the roadside. No dash indicators illuminated until after the vehicle had died and a restart was attempted, at which point the check engine light came on.

Lexus dealership - following 34-day retention with Lexus Technical Assistance (TAC Case [redacted]) and personal on-site inspection by a Lexus Field Technical Engineer - confirmed worn intake valve guide on Cylinder 3. Repair estimate: $10,355.61 subtotal per Service Bulletin L-SB-0007-21 ($10,671.72 total incl. shop supplies and tax). Estimate cites L-SB-0007-21 without mileage qualification, confirming technical applicability. TSB PATTERN - NO RECALL: Lexus has issued multiple TSBs on the 8AR-FTS engine: L-SB-0153-17 (September 2017) and L-SB-0007-21 (March 2021, revised April 17 and July 2, 2024), covering 2015-2024 model year vehicles - progressively widening applicability over three years. Both 2024 revisions occurred during the active warranty period. No recall has been issued and this consumer received no notification of any kind. A TSB is an internal dealer communication - not consumer notification. A CPO purchaser relying on Lexus's representations of comprehensive inspection and rigorous certification has a reasonable right to assume known defects were addressed, without searching technical databases. MANUFACTURER RESPONSE: Lexus declined to authorize repair under warranty or as goodwill and declined to confirm authorization in writing. REQUEST: Please investigate whether the pattern of multiple TSBs covering progressively wider applicability - with no recall despite safety-critical symptoms - warrants a formal investigation and escalation to a safety recall. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

it is stuck in the wrong gear, accompanied by a significant loss of engine power. An onboard diagnostic alert has indicated a malfunction in the electronic control of the engine throttle or automatic transmission. This 'limp mode' behavior creates a hazardous situation during highway driving or merging, as the vehicle cannot maintain speed or respond to throttle inputs, increasing the risk of a rear-end collision.

was reduced while driving. The vehicle was taken to the dealership for evaluation and repair. A diagnostic code confirmed a cylinder misfire. •SECOND INCIDENT: Several days after being returned to the owner, the MIL flashed again and engine power was reduced, requiring careful maneuvering. The vehicle was returned to the dealership for further repair and remained in their custody for about a month. •THIRD AND MOST SEVERE INCIDENT: A few days after being returned, the MIL flashed again. The vehicle abruptly slowed, shook, and temporarily stalled in active traffic, requiring immediate intervention to avoid a collision. The engine restarted after pulling over safely. The vehicle has undergone compression testing, coil and spark plug replacement, battery replacement, and extended diagnostics with manufacturer technical support. Despite these efforts, the defect persists, demonstrating it is intermittent and unpredictable. The combination of sudden loss of engine power, stalling, and shaking in traffic creates a foreseeable risk of collision, particularly at intersections and in situations where predictable vehicle response is critical. Videos and diagnostic evidence document these recurring failures.

engine stalling and loss of power - I believe my vehicle should be considered part of the affected group. It is not safe or fair that some 2017 models are excluded based solely on VIN range when the defect clearly exists in other units as well. My vehicle is showing the same failure and should be eligible for the same repair or recall coverage. If you'd like, I can also format this as an email, a letter to Lexus corporate, or a service request message.

malfunctioning High Pressure Fuel Sensor and replaced that part, which I paid for out of pocket. The issue happened again 2 months later and the Lexus dealership replaced this part again. That was 2 years ago, the warranty on that replacement ended after 1 year, and my car had the same issue again where it literally stopped and turned off while driving on the road with no warning whatsoever. No light or indicator came on until the car engine turned off and then the entire dashboard lit up. My car is currently at another Lexus dealership and they are attempting to identify the issue once again. I see that there was a Fuel Pump recall put out for other Toyota / Lexus vehicles for this exact issue, but my specific Model / VIN are not a part of this list. The descriptions and reasoning for the recall describe my exact situation, I would like to see if there is a way I am able to add my Model / VIN to this list to protect myself and others. I do not feel safe driving my vehicle as it can turn off on me at any moment on the road.

dealership where they kept it for 2-3 days and could not figure out what the problem was, although they witnessed all the issues. I'm marking September as the date of the incident, but this has been ongoing since last year and currently giving issues.

no choice it shaked mostly on idle and I drove like that for a few days on Friday as I was coming back from work on the freeway the car shook in the freeway as I exit out the freeway the car felt almost if I couldn't pick up an speed and I got extremely scared with the cars flying by. I decided not to drive and take it to a nearby mechanic I thought maybe the spark plugs or coils might be the issue but after 3 days in the shop and replacing spark plugs he confirmed it was the direct fuel pump and possibly the fuel injector....my car is only used to drive to and back from work and only has 58k miles. I believe this is a default manufacturer part and I need help recalling this particular part on my vehicle.