Toyota Valve Springs Recall - Tech Explanation [Updated]

Earlier this week Toyota made a less-than-pleasant announcement, informing us that 270,000 vehicles sold around the world have faulty engines. The company did not mentioned if it was considering a recall, but this seemed like the obvious choice.

The information coming from Toyota was pretty vague, as the autmotive producer only mentioned that the affected engines, which can be found on multiple Lexus sedans and on the Toyota Crown) have a valve springs issue that can lead to engine stalling while the vehicle is moving.

However, it appears that the issue, which affects the company’s 3.5 liter V6 engine, as well as 4.6 liter and 5.0 liter V8 powerplants, is not a new one, as autoblog reports.

Lexus dealers have been familiar with the problem for a few years now, with the issue being that the valve springs breaks at about three quarters of their length. This allows the springs to keep the valve retainers in place, making the difference between a minor damage and serious cylinder damage.

However, if the problem occurs while the engine is high in the rev range, the valve can come off and seriously deteriorate the powerplant, with the repair bill reportedly playing in the $10 to 15,000 league (it is unclear if the owners were asked to pay for the damage of if Toyota covered the costs).

According to the aforementioned source, Toyota’s usual treatment for the problem has been to replace all the springs in an affected engine, regardless of the number of those that were damaged.

Update: Lexus has announced a recall in the U.S. for 138,000 vehicles affected by the problem.
If you liked the article, please follow us:  Google News icon Google News Youtube Instagram
About the author: Andrei Tutu
Andrei Tutu profile photo

In his quest to bring you the most impressive automotive creations, Andrei relies on learning as a superpower. There's quite a bit of room in the garage that is this aficionado's heart, so factory-condition classics and widebody contraptions with turbos poking through the hood can peacefully coexist.
Full profile


Would you like AUTOEVOLUTION to send you notifications?

You will only receive our top stories