My True Story of a 2019 Jeep Grand Cherokee Trailhawk with Electronic Start Stop System:  developed
a sudden uncontrolled acceleration along with a foot brake stop failure, resulting in a two car collision.

My name is Elmer E. (Bud) Baumgart Jr. from Sioux Center, IA. and I own the damaged Jeep vehicle in this report.

I truly need your help!
I want to know if anyone reading this web page and had this type of Jeep accident happened to them, or know of someone that may have had a similar issue. Please let me know! E-mail:
Baumgart@mtcnet.net

On January 25, 2024 (after lunch) I damaged my personal vehicle 2019 Jeep Grand Cherokee Trailhawk (purchase used) by striking another parked auto at Ver Hoef Auto Sioux Center, IA parking lot (private property). I really don’t believe it was my fault. No injures.

A brief report: The day of the accident I wanted to make an appointment with the local Jeep dealer for a routine lubrication service. After making the appointment I walked back to my Jeep, starting the vehicle up, now checking for traffic on the street, placing transmission in (R) to back up toward the east. After clearing the Nissan van (to my right) and stopping, pointing jeep north, (My front bumper now clears the van rear). I placed transmission in (D) drive gear to move forward into the street lane and out of the lot, Immediately to my amazement, Jeep suddenly accelerates forward out of control, veering to the left toward the van rear. What I do remember is having both hands on the steering wheel trying to apply as much pressure on the brake petal as possible to stop the vehicle, with no success. It continued to accelerate with engine screaming at a high RPM and I now hit the rear fender of the Nissan at an accelerated speed. The collision stopped the Demonic progression. My estimate travel time approx. 1 to 2 seconds. Note: considerable amount of damage for such a short distance, with a total of approx. $25,000.00 damage to both vehicles.

My personal information at the time of the accident; I’m was 81 years old in good health, eyesight is good and obey all traffic laws, no traffic offenses and have a valid driver license. I retired from a fulltime sales career in late 2022, however, I currently have a Federal Firearms License to buy & sell a few guns and ammunitions for extra income.

My vehicle accident history: In 1960 at the age of 18, I did rearend a car on an open country two lane hi-way in rain and foggy weather. The vehicle stopped in front of me to pick up a hitchhiker, and I did not see the brake lights in time. Very minimal damage and I was not injured (no seatbelts during that time period). So, from the fall of 1960 to January 25, 2024, little over 62 years of normal driving, no accidents, and I believe I have an excellent driving record. One other note: I’m sure there are bad drivers at age 50, and good responsible drivers at age 90, and between. Age is not the issue, it’s the individual’s capability and skill!

Again, back to the accident at Ver Hoef Auto Sioux Center, IA parking lot, on January 25, 2024, I was told at the time of the accident (stated by the Ver Hoef Jeep service manager) the cause maybe by my winter leather boots that I was wearing that day in some way could have caused the acceleration and brake failure. It’s only a service manager theory! No investigation or proof by Ver Hoef Automotive to prove such a claim. Also; the auto dealer was quick to blame me, versus a possible mechanical problem with the vehicle. I’m not a new customer, and have been employing the business services for 41 years. I also will point out; I have been driving for a number of years with the same boots (during cold winter weather only) with no problem. The uncontrolled acceleration accident only took a few seconds, not a lot of thinking time, so it’s hard to know for sure, but I don’t think it was my boots or using the wrong foot on the brake vs. gas petal, because I just had backed up the vehicle into the street and successfully stopped and positioned for forward movement (my foot gas/brake application and position was correct at that moment). The reason I’m seeking more information and wanting a fair evaluation of the accident.

Sioux Center Iowa Police was asked to investigate the accident case number 24-001212. Time of accident 1/25/2024 approx. 2:00 pm. No accident reports due to private property, just exchange of insurance information. 

I asked Chrysler / Stellantis to investigate the crash and they did. The reply 2-21-24: “The inspection involved a thorough examination of your vehicle and the photographing of all critical areas. We have had the opportunity to review the details of the inspection report and must inform you that we are not led to believe that the incident was due to a manufacturing responsibility.  Therefore, we must respectfully decline any assistance associated with this matter” Stellantis Special Investigations.

Hopefully Stellantis has honest people. Early this year, I was optimistically thinking Stellantis would create an unbiassed investigation and willing to find the problem. Now I’m not so sure! Personally, if I was Stellantis, I would want to know, to assure my customers the vehicle is safe. What caused the Demonic progression?

The Jeep had a routine lubrication service by Ver Hoef Auto Sioux Center, IA on September 8, 2023. By the shop service record, no report of any battery condition was listed, most likely not tested. Why this important?

I personally believe the crash was due to possible low voltage caused by an auxiliary battery failure, and I have to disagree with the Stellantis report, it may not be manufacturing, but an electronic responsibility. Report by Stellantis, the ACM System Voltage at Event (V) 14.9 at the time of the accident was high. Should I understand this number correctly, the main battery was low on voltage or the battery was weak, alternator voltage increase reported is trying to correct the voltage loss from the battery. In my opinion, the low voltage resulted in an electronic voltage failure with the vehicles “Drive by Wire technology” causing a possible unwanted sudden engine acceleration. Stellantis needs safe guards in place to assure owners this will not happen.

Report from Jeep Forum from the internet: A voltage of 14.9V is slightly higher than the typical range for a vehicle’s charging system, which is usually around 13.5 to 14.7 volts. Here is a potential cause: A faulty battery can sometimes cause irregular voltage readings and output, even if the battery seems to be holding a charge, it might not be functioning correctly under a load.

Now, I’m seeking proof of a battery failure and I wanted someone (independent source) to test the Jeep’s twin battery condition. The day the Jeep was repaired by the body shop and released to be driven, during the first hour on April 23, 2024, I drove the vehicle to an Interstate Batteries shop in Sioux Center, IA. They reported my Jeep’s Mopar AGM auxiliary battery was dead and main Mopar AGM battery tested 600 amps (low) of the 650 amps reported on the battery label. I immediately had them replace both batteries with the best AGM Interstate Batteries available.

I also personally believe by evidence found, that the 2019 Jeep Grand Cherokee Trailhawk with ESS (Start / Stop System with (1) Mopar AGM regular and (1) Mopar AGM auxiliary battery paired) with the auxiliary battery reported dead, it would drain the main battery voltage, possibly causing the Demonic unwanted acceleration.

I also believe the possibility of a vehicle sudden acceleration failure is a huge safety concern. Owners (and service departments) need to monitor vehicle battery conditions regularly, it’s important, unwanted acceleration could happen on private property and could easily happen within the public domain and possibly kill someone or yourself.

Elmer Elton (Bud) Baumgart Jr.
E-mail:
baumgart@mtcnet.net

www.Jeep.com
www.interstatebatteries.com