Recently purchased a 2019 Subaru Outback. Noticed brake peddle can be slowly pressed to the floor when at a stop light. When driving I don't notice this. What could it be?
ABS is whats doing it, read codes that'll pick up can bus codes too. What you describe may be normal. But the dealer should be able to handle this warranty issue and code reading, act scared about the brakes/safety ; )
Does the dealer have another 2019 on the lot that you can test drive? If so, does it do the same thing? Something doesn't sound right to me... The only time I have had a pedal go to the floor was when I had air in the system.
HB thanks for the quick answer. Made an appointment with the dealer for Tuesday. Been driving the car for 2 weeks and didn't notice this until I was at a stop light on a hill. Shouldn't be normal. I will take your advise and play the wife and family card with the tech. best
Update: Took OB to the dealer who said there was a "glaze" and rust on the rotors. Recommended cutting the rotors. After had noticeable brake vibrations. Replaced front rotors under warranty. Brakes work better, still spongy and brake peddle can press close to the floor. I add small amount of brake fluid to master cylinder after I noticed the cap seal was dimpled. After driving a 2009 crv for 10 years the brakes on the OB are disappointing.
@robk
I can't believe they said "Glaze" and rust on the rotors. Rotors will get rust spots in couple days in wet weather if your not driving it. But after driving it the pads will clean all that rust off. Probably that seal or entire master cylinder. Just my 2 cents. I think dealer was making up things.
Slowly press down to the floor and can hear sound like cylinder or hydraulic strut?
I guess it is designed to protect brake callipers and brake disks.
Otherwise brake system bites and holds too tight.
Thanks Mink for the instructions. I hear a pssst coming from the under the pedal when I slowly press the pedal to the floor.
From research I found the vacuum booster system is suspect specifically the check valve on the manifold. I bought the 2019 OB with 15k miles. The car sat for 2 month. I wonder if low usage and lack of daily use contributed to a vacuum system malfunction. I drove the car hard braking for the last few weeks. The brakes work as they should during normal stop and go driving. When the engine is at idle at red light for extended time or when first started in the morning is when I notice the pedal can go close to the floor and the pssst sound. The brakes are better than when I first noticed the problem. At first I had zero brake, pedal to the floor at a red light. The hill holder stopped me from rolling backward. I reached for a manual parking brake that does not exist and stated to pump the brakes. Glad it happened to me and not wife or kid. Not what I've become accustomed to with my hondas. I have not yet returned to the dealer.