Advics Co., based in Japan, supplies certain parts to both manufacturers, and the overlap means that, as with the Toyota recall, drivers who replace factory-installed Honda Genuine brake fluid with another brand may cause a rubber seal in the master cylinder to dry out or curl, leading to a possible leak. The problem with the other brake fluids, according to both Honda and Toyota, is that they might not contain the correct polymers to keep the parts working properly.

Affected models are the 2005-07 Acura RL and 2005-07 Honda Odyssey. If you own one of these vehicles and your brake light illuminates, contact your dealer immediately.