Brakes unresponsive in accident

[2022RedDog]

Loss of the front right wheel would have lowered that side pulling the opposite side tire slightly up (maybe off the ground). Tough to get any traction with only two opposing tires.

I’m curious, did you had lane assist running? I’ve been helped out by that feature already.

Glad you are safe.

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[Calson]

With my 1998 Tahoe the ABS would release the brakes when I was on pavement that had any amount of gravel of sand on it. The braking distance would more than double thanks to the ABS. Same problem going down dirt roads with this generation of ABS brakes.

I did not have the problem with my 2018 Chevy Traverse so it appeared that the problem was fixed. I do not see the problem with my 2022 F-150 either.

A bad ABS sensor on a wheel could cause the problem you experienced and worth having a mechanic check them all out.

www.carcomplaints.com is a good site to see if this is a known problem. For example the 2015 F-150 was more likely to have the brakes fail.

 

[Zengineer]

You hit something hard enough to rip the entire front wheel and suspen system off the truck and think you may have totaled it. How did you expect the vehicle to handle in the seconds after? Were the 3 remaining tires even touching the pavement at that point?

 

[Tomatoboy]

With my 1998 Tahoe the ABS would release the brakes when I was on pavement that had any amount of gravel of sand on it. The braking distance would more than double thanks to the ABS. Same problem going down dirt roads with this generation of ABS brakes.

I did not have the problem with my 2018 Chevy Traverse so it appeared that the problem was fixed. I do not see the problem with my 2022 F-150 either.

A bad ABS sensor on a wheel could cause the problem you experienced and worth having a mechanic check them all out.

www.carcomplaints.com is a good site to see if this is a known problem. For example the 2015 F-150 was more likely to have the brakes fail.

Mild off topic… Older ABS implementations, particularly in pickups and other RWD vehicles, were often fairly limited in sensor number. They’d have one channel systems (one whole axle being sensed and activated at once, and only one axle total) ranging to three channel systems (one sensor for each front wheel but only one for the whole rear axle). ABS systems often have historically struggled on gravel, but older 1-3 channel systems in my experience were particularly bad with it. I’m betting from that era your Tahoe was at best a 3-channel system. The current F-150 uses a 4-channel system with a sensor and actuator for each wheel.

FWIW My personal experience with GM and Ford ABS systems is that Ford’s handle gravel a little better. I don’t know if it is the pulse frequency or what, but I’ve had 4-channel systems from Ford and GM and since the late 2000s or so I’ve preferred Ford’s.

 

[glockcopbob]

You hit something hard enough to rip the entire front wheel and suspen system off the truck and think you may have totaled it. How did you expect the vehicle to handle in the seconds after? Were the 3 remaining tires even touching the pavement at that point?

Sadly, this wont total the truck outside of the other damage. My 2019 was hit by a guy running through the intersection in the further left turn lane than mine. i guess he thought i was going straight since the intersection was huge and he was going highway speed from the offramp. the drivers side tire was ripped off along with front end body and door damage. $11k was the estimate for repair and ended up around $14k. You need to be at least 80% of the value before they right it off. Allstate is 105% of the value. My truck was less than one year old and the repairs took 6.5 months but most of that was due to COVID lockdowns.

My guy was a Hit-and-run (plates were stolen) so i had to eat the deductible and the loss of value. Traded it in on December 28th to get the most value I could and got a new 21 PowerBoost!

 

[Zengineer]

Sadly, this wont total the truck outside of the other damage. My 2019 was hit by a guy running through the intersection in the further left turn lane than mine. i guess he thought i was going straight since the intersection was huge and he was going highway speed from the offramp. the drivers side tire was ripped off along with front end body and door damage. $11k was the estimate for repair and ended up around $14k. You need to be at least 80% of the value before they right it off. Allstate is 105% of the value. My truck was less than one year old and the repairs took 6.5 months but most of that was due to COVID lockdowns.

My guy was a Hit-and-run (plates were stolen) so i had to eat the deductible and the loss of value. Traded it in on December 28th to get the most value I could and got a new 21 PowerBoost!

I only mentioned it because I thought the OP had wondered if it might be totaled. I must have mixed it up with another thread. My only point wasbthat a severely damaged vehicle can't be expected to function normally.

 

[HammaMan]

I only mentioned it because I thought the OP had wondered if it might be totaled. I must have mixed it up with another thread. My only point wasbthat a severely damaged vehicle can't be expected to function normally.

Given the high price of used car parts, totaling isn't totaling. Insurance companies have been 'totaling' vehicles the past 2 years if there's a demand for their parts.

The equation isn't solely the cost of repair, it also includes under-paying the customer to 'total' out the vehicle while selling its parts for profit.

I've seen some vehicles recently, specifically PBs, where the insurance company isn't fixing ~10k in damage because they can just sell the parts.

Best of luck to the OP!

 

[Savannah Power]

So I hit a guardrail with the passenger side of the '22 Powerboost FX4 (In 2H), and after first contact, the brakes failed to respond, resulting in the truck proceeding to drive through an additional 20-30 feet or so of guardrail (and 3-4 cedar posts) beyond what I felt like it could have stopped within. The initial impact ripped the front passenger wheel clean off, so that was certainly part of it, but my question for you guys: Is the braking system of the truck vulnerable to failing to deliver braking power in a situation like this?

I'm not an expert, but have gotten used to losing some braking control with ABS over the years, and knowing these are even more complex brakes, with the regen and other traction control systems, thought I would ask. If there are scenarios when braking could be unpredictable, I'd like to know and familiarize myself with them.

thx in advance for any knowledge...

The electric brake booster in my 2021 Build 1 truck was replaced under warranty after I had multiple issues of applying brakes and having the pedal drop and pressure in the system also drop (reducing braking force). This was a short-time event, but would have contributed/caused an accident if it happened under different conditions. The replacement was very touchy at first, but has normalized with use. The price for the part was $4600 (plus labor), anyone having this happen after the warranty will be a very unhappy customer

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