Depress Brake To Start Engine often comes up because the driver is not pressing the brake pedal hard enough or the faulty brake light switch. The best way to prevent surprise issues from popping up in your car is to have it serviced regularly. Therefore there is no vaccum left to assist the brake being pushed when you go to restart the vehicle. Pasted as rich text. This is because rubber vacuum hoses tend to dry rot and crack at their connecting points over time. Maybe open up a vacuum line to relieve pressure? Still, having a hard time dealing with your breaks? Home Auto Maintenance General Maintenance. Most times it would start however it began to worsen and take 3 or 4 times before it would turn over. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Display as a link instead, If the connection is broken, the fuse is bad. If the battery wears down, you need to change it. Brake Master Cylinder - Master Power - 2014 Acura MDX 5 Door ADV (SH-AWD ENT) KA 6AT. If you've followed these steps correctly, your engine should roar to life. If that doesnt work, keep the brakes pressed, move the shifter to Neutral, and then try to start the engine. Push the start button and car stumbles, but starts. Full pushes, as far as the system pressure would allow. Examine the brakes if the brake pedal is still stiff at that time. Lexus Ask an Expert Car Questions Lexus Troubleshooting This answer was rated: Lexus won't start the brake pedal is depressed and it's very Answered in 5 minutes by: Lexus Mechanic: Internal88 Ask Your Own Lexus Question Motor Vehicle Maintenance & Repair Stack Exchange is a question and answer site for mechanics and DIY enthusiast owners of cars, trucks, and motorcycles. So have you had the dealer check your car or you just relying on stories? Once you've pushed the brake down as far as you can, try to start the car. A number have also claimed they took their car to the dealer. While aweak battery may have enough powerto unlock the doors, it may not allow the Body Control Module (BCM) and Immobilizer to boot up and run properly. VIN Decoder. Most common failure causing your symptoms is the vacuum check valve in the vacuum hose between the engine and the power booster. mdxers.org is an independent Acura enthusiast website owned and operated by VerticalScope Inc. BTW around a week ago the car I was renting (a Ford Fusion hybrid) did the same thing two or three times, OAT around 30 F. Very scaring, expecially when one did not buy the premium road . The brake system is very complicated and consists of a lot of different parts. Chances are you or someone else pushed the brake pedal a few times without the engine running and used up all the reserve vacuum in the brake master. By On the tenth day of driving it wouldn't start! Use a 10 mm socket and loose the fuse/relay module. If your brake vacuum is exhausted, then you'll feel your brakes soften up once the engine starts running. When you push the Start button: First, the vehicle's computer checks if the brake pedal is depressed. Tap the brakes shortly before you push the ignition in your car, and you won't run the risk of disabling your brake booster. I doubt you're doing that, but I mention it just in case. My mom didn't mention a warning, but she's not the most observant person in the world, and I have not been able to reproduce the issue. Lexus changed the vacuum assembly, and it seemed to be better, but still had the problem occasionally. Make sure to inspect the battery carefully. If the voltage is lower than that, it may provide enough power for the dash lights and other electronics such as the radio and door locks to work but not enough for the car to start. There'd need to be significant rust in the areas of the brakes that aren't supposed to rust. Most likely after it sat for two weeks you lost your vacuum stored in the vacuum canister. After 2014 MDX (Advanced all wheel) sits for several days, when I try to start it the brake pedal is rock hard and tough to push down. Prius Won't Turn Off - Unexpected Reasons and Solutions for the Issue. The only suggestion I would have is have the dealer check it out. Advertising - If the brake lights are coming on then you have depressed the pedal far enough to also engage the start interlock. Started Sunday at 06:48 PM, Lexus Owners Club of North America 1. The brake pedal seems stuck in cement and won't depress. You can post now and register later. It's not the weather cuz FL is hot. It only takes a minute to sign up. If it is below 12vdc, it probably needs charged. J Jones' may be describing "very hard" because it is unusual for him/her to have to apply more effort than usual. By my.is is not in any way affiliated with Toyota Motor Corporation, VerticalScope Inc., 111 Peter Street, Suite 600, Toronto, Ontario, M5V 2H1, Canada. Several times in the past few days, when I go to start the car by putting my foot on the brake, the pedal feels very hard and won't depress much. The gear selector can prevent the vehicle from starting. A series of loud clicking noises when turning the key might indicate a dead starter motor. That's definitely not a normal condition and rust from a few days (or weeks or months) won't cause a hard pedal. The dash lights. You may need to check your brakes more often than this depending on the type of roads you regularly drive. madiro You will likely notice your brakes locking up if the ABS control module fails. Learn more about Stack Overflow the company, and our products. If you press on the brake pedal a few times with the engine off, the brake pedal will quickly begin to feel hard, which will make it harder to press the brake pedal far enough to trigger the brake light switch. Well the brake pedal should get harder to push when the car is no running because there is no vacuum. Thank you everyone. The voltage required to create the zaps in the spark plug is generated by ignition switches This created spark ignites the air and fuel combination. . Once the engine has started, your brake booster will activate, and your brakes will soften up. Ignition switches are easily replaceable and cost next to nothing. I changed the alternator yesterday after it failed, and now my car will not start. I had this problem and the brake light switch needed to be replaced. Started February 6, 2022, By If your Optima won't start because you can't get the brakes down far enough, then you have the option of overriding the ignition and starting the engine without the brakes. What is the arrow notation in the start of some lines in Vim. Could a low key battery cause the boost to not engage? Sometimes, it has the regular travel of about 1-2 inches, and was normal operation as it was when the car was new, and the start button will work fine. This may not be the first symptom. Something like leaving a dome light on in the car overnight would do it. Show more Show more No Crank. the_same_mountainbike April 23, 2008, 5:35pm #5 Step on the brake. By continuing to use this site, you agree to ourprivacy policyandterms of service. Frank DUva Were you pushing slowly all the way down until the stopping point and then fully releasing, or merely quick pumping? However, it can be very confusing when the brake pedal is also hard. Answer (1 of 16): In newer cars - the car refuses to start. This feature is designed to ensure that the vehicle remains stationary and under control before the engine starts, reducing the risk of accidents. For anyone else that would like to experience what I believe J Jones is describing, simply turn off your car and pump your brake pedal. You will note it gets more and more difficult until all of the vacuum assist is depleted. Clear editor. Kia Optima Wont Start, Brake Pedal Wont Depress Whats Wrong? If you have a manual transmission, there is also a switch on the clutch pedal, which means you need to press the pedal to start the car. I still have assist even when my renegade hast been run in a month. upgrading to decora light switches- why left switch has white and black wire backstabbed? That's what makes me believe it was a result of simply depressing the brake after the engine was turned off. Very occasionally, my old car doesn't start. This happened to my mom today (and has happened once before). NTSB, do you read your online complaints? Troubleshooting the Stop/Start button requires a professional-level scanner. On the same note it could be difference of the adjustment of the safety switch. Terms of Service - Having said that, a brake booster should hold enough vacuum to allow the brake pedal to be easily depressed at least 1 to 2 times even after the vehicle has been sitting for a day or two or more. Once you depress the brake pedal far enough, you can engage the brake switch and engage your starter and start the car. First check the voltage. Powered by Invision Community, Lexus ES250 / ES300 / ES330 / ES350 / ES300h Club, Brake Pedal Very Hard To Depress In Startup, Lexus Model: 2004 RX330 , 2008 , 2011 now a 2016 ES350. October 5, 2009 in 07 - 13 Lexus IS250 / IS350 / IS-F, The problem when I try and press the brake peddle to then press the start button the peddle will not move and there for can't start the car, the dash lights up but it wont start the engine, I eventually found by pressing very hard on the brake peddle it finally had movement and now was able to push the button to start the engine, this is a hit and miss problem, it has happened to me only 5 or 6 times and maybe weeks apart before it happens again, any suggestions. Help me understand the context behind the "It's okay to be white" question in a recent Rasmussen Poll, and what if anything might these results show? Like this content? Perhaps there's a work-around or a way to get the boost system to engage? Most likely, you are shutting off your car and continuing to depress the brake pedal (consciously or unconsciously). My mom tried a few times and it wouldn't depress. It drove like a dream for the rest of the day. 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