One of the O2 sensors on my 1998 Lexus LS400 recently failed, throwing a P0161 OBDII code (at 175K miles). I’ve cleared the code and verified it comes back, so I don’t think it’s a transient failure. I haven’t yet replaced it, but I have noticed that my gas mileage, as reported on the trip computer, has improved significantly since the failure. Before it was 23-24 mpg, now I’m looking at 26. I know that one of the functions of the O2 sensor is to help regulate mixture, so I’m guessing the mixture is now leaner without one of the O2 sensors. I’ve noticed no discernable change in performance of the car. Assuming I can clear the error code before taking it in for OBDII emissions inspection, is there a downside to just leaving it and running aggressively lean (if that’s in fact what’s happening)?
Automotive News [sub] is reporting that Toyota will replace or reshape some 3.8m accelerator pedals to reduce the risk of them becoming lodged against floormats. Toyota will also be replacing some floormats as it battles a recent unintended acceleration scare. But far more interesting than the prosaic alterations to pedals and mats is Toyota’s decision to take modifications a step further on certain affected models. AN [sub] explains:
Toyota will install a brake override system on the involved Camry, Avalon, and Lexus ES 350, IS 350 and IS 250 models “as an extra measure of confidence.” The system will shut off engine power if drivers press the accelerator pedal and brake pedal simultaneously.
Oy. More proof that it only takes a few idiots thinking their car is possessed to ruin burnouts for everyone. Well, everyone who owns a slushbox Toyota or Lexus, anyway.
The most expensive Toyota ever made, the $375,000, “totally customizable” Lexus LF-A will not be available for sale to anyone, reports Automotive News [sub]. Not because nobody wants to pay that much for a Toyota though, but because the company is somehow worried about price speculation. “If someone buys it the first month and then decides to sell it, that could be damaging for the ownership experience,” says Lexus VP sales Brian Smith. “If it is not controlled and hits the speculation market, all bets are off. We want people out driving the car and not just parking it in a museum or selling it at an inflated price.” Which is why only 500 models are being produced? At the end of the mandatory two-year lease, customers will have the option of buying their LF-A outright. So how does the world’s largest automaker build such an advanced, limited production machine and not expect speculation and/or hoarding to take place? Moreover, how will they guarantee that LF-As are actually driven during the two-year lease period? One of the greatest sins of the auto industry is the reluctance to admit that a brand belongs to customers. For Toyota, it seems, not even its brand-defining supercar will truly belong to its customers… for two years anyway.
A year ago, TTAC published a story about out-of-control Toyota Tacomas. Since then, reports continue to surface of “unintended acceleration” events in Lexus ES and IS and Toyota Camry and Camry Solara vehicles. Toyota insists that all-weather floor mats are causing the problem; the accelerator becomes stuck under the rubber. Autocoverup.com alleges, well, you know. “This is a known problem with over 432 complaints,” the site’s author insists. According to NHTSA’s Defect Investigation’s database, reports of unintended acceleration in Lexus ES models first surfaced around 2004 and continued until late 2008. One report (ODI-NHTSA Complaint Number 10252860) describes the problem:
Toyota sold 117,287 vehicles this January, falling 34.4 percent compared to January 2008. Losses were split relatively evenly between the Toyota/Scion division (down 34.9 percent) and Lexus brand (down 30.3 percent). Toyota doesn’t break out Scion brand sales for its press release, but all of its models are down between 41.8 percent (xD) and 59.5 percent (tC). Corolla (down 10.8 percent), Lexus RX (down 7.2 percent) and FJ Cruiser (down 18.7 percent) were the best performers in the ToMoCo lineup. Elswhere, sales drops by model were as bad as 67.2 Percent (Land Cruiser), 61.6 percent (Lexus SC) and 63.6 percent (Lexus GX). Hybrid sales hit 11,876 in January.
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