Your Honda Odyssey brake discs work together with your brake pads to slow down or stop your minivan whenever you step on the brake pedal. If you experience any of these five symptoms, then you've got a faulty brake disc on your hands:
If you experience your minivan pulling to one side when you step on the brakes, then it could be because of a piston seizure or a loose rotor. These faulty braking components will be located behind the front wheel that's at the opposite side of the pull. So, be sure to tighten the rotor and free up the piston on that wheel to solve this problem.
If you hear grinding sounds from the front of your Odyssey, then it could be due to a lack of friction material on the brake pads that's warping your rotors. This problem is not only annoying to hear, it can also indicate that the brake rotors' performance has been impacted by the pads. You'll need to replace the brake pads with a thicker aftermarket brand and install new brake discs as well to prevent more costlier repairs.
If you're driving your Honda Odyssey and you experience soft and spongy braking, it could be because you recently changed your brake pads and they still need to conform to your brake discs. To fix this, you can replace the disc itself or have it machined to be more flat and even. Alternatively, you can also practice wearing in your brake pads if your brake discs aren't worn down that much. This process will prime them so that they'll work much better on your minivan and with your rotors.
If you continue to experience soft and spongy braking, then the problem may lie elsewhere in the braking system and not in the brake discs. According to the National Highway Traffic Safety Administration (NHTSA), 2007-2008 Odyssey models may experience a different braking pedal feel because of air that has found its way into the braking system.
If you hear the occasional groaning sound while you're driving your Odyssey, don't panic. Stay calm and check if you're brake discs are damaged before replacing them. The occasional groaning might be due to the rotor slipping between the brake pads under certain pedal pressure conditions.
If you would like to be absolutely certain before you replace your Honda Odyssey brake disc, then you'll need to lift up your minivan onto a couple of jack stands, remove its wheel and examine the suspicious brake pads and discs carefully. If you see that your rotors are still smooth, clean, and shiny, then you don't need to replace them. But if you see any grooves, striations, and uneven wear, then you've got a brake disc on your hands that needs replacing.