TOKYO (AP) — Toyota said Sunday that it will soon announce a plan for dealing with braking problems in its Prius hybrid amid reports that the world’s largest automaker plans to issue a recall for the latest model of the vehicle in Japan.

Toyota Motor Corp. has already had to recall more than 7 million other cars in the U.S., Europe and China over a sticky accelerator and floor mats that can get caught in the gas pedal. Those problems and criticism of Toyota’s response to them have sullied the stellar reputation for quality long enjoyed by the world’s biggest automaker.

Separately, the company has told dealers in the United States it is preparing to repair the brakes on thousands of Prius vehicles there, according to an e-mail sent by a company executive. It was unclear whether Toyota planned a formal U.S. recall.

“We will make an announcement soon on the action we plan to take,” spokeswoman Ririko Takeuchi said, commenting on media reports that the company has decided to issue a Japan recall. Takeuchi did not confirm the reports.

Toyota decided Saturday on a recall in Japan covering its latest Prius model and has notified domestic dealers, Japan’s largest newspaper, the Yomiuri, reported without naming sources. It said Toyota would announce the move early this week after consulting with the Japanese government. Japan’s Kyodo News agency and TV Asahi carried similar reports. Kyodo said Toyota had started notifying dealers and that at least 170,000 vehicles in Japan would be subject to the recall.

Phone calls to the section at Japan’s transport ministry dealing with recalls went unanswered Sunday. None of about 10 Toyota dealers in Tokyo and the western Japanese city of Osaka contacted about the reports said they had received any notification, though some said they expected to have news this week.

Prius drivers in Japan and the U.S. have complained of a short delay before the brakes kick in — a flaw Toyota says can be fixed with a software programming change. The lag occurs as the car is switching between brakes for the gas engine and the electric motor — a process that is key to the hybrid’s increased mileage.

The brake problem affects about 270,000 Priuses that were sold in the U.S. and Japan starting last May. The company blames a software glitch and says it has already fixed vehicles that went on sale since last month.

Bob Carter, a Toyota group vice president, sent an e-mail message Friday night to U.S. dealers saying the automaker is working on a Prius repair plan and will disclose more details early this week. At least 100 drivers of Prius cars in the U.S. have complained to the government that their brakes seemed to fail momentarily when they were driving on bumpy roads. The government says the problem is suspected in four crashes and two minor injuries.

Public awareness of the problem “has prompted considerable customer concern, speculation, and media attention due to the significance of the Prius image,” Carter said in the e-mail. “We want to assure our dealers that we are moving rapidly to provide a solution for your existing customers.”

Besides a full-fledged safety recall, the company could simply ask owners to bring in their vehicles for repairs, since the brakes are not failing completely. The lag occurs as the car switches between brakes for the gas engine and the electric motor — a process that is key to the hybrid’s increased mileage.

The Yomiuri newspaper, however, said that Toyota decided on the more serious step of a recall for the Prius to give priority to restoring consumer trust.

Toyota has acknowledged receiving dozens of complaints about the Prius in Japan.

There is high-level government concern in Japan about Toyota’s quality problems. Cabinet ministers have expressed alarm and urged the company to move more quickly to ease consumer worries.

Media criticism of Toyota has intensified since a news conference on Friday by Toyota President Akio Toyoda in which he offered an apology for the defects, but few details about what the automaker would do about the Prius.

The reports said the new Prius model was released in May, and more than 300,000 have been sold in about 60 countries and territories.

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AP Business Writer Yuri Kageyama in Tokyo and Auto Writer Dee-Ann Durbin in Detroit contributed to this report.