Chrysler has told federal safety regulators that 16,385 of its 2026 Ram 1500 pickups may have tire-pressure sensors that fail to detect low pressure or fail to turn on the dashboard warning. The trucks, all model year 2026, were built over roughly nine months and do not meet the federal standard for tire-pressure monitoring. Owner letters are expected to be mailed October 27.
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A fault in this part is easy to miss because the system exists to speak up only when something else has gone wrong. A working monitor stays dark for months, so a dead one looks identical to a healthy one until a tire has already lost most of its air.
A dashboard light meant to beat the flat
Every new pickup of this weight class sold in the United States has to carry a tire-pressure monitoring system, and the rules for it sit in Federal Motor Vehicle Safety Standard No. 138. The standard says the low-pressure telltale must come on when a tire falls to 25 percent below the maker’s recommended cold pressure, or to a fixed minimum for that tire type if that figure is higher, and it must do so within 20 minutes. It must then stay lit while any tire remains that low. A separate requirement covers faults in the monitor itself, which must also be reported to the driver within 20 minutes.
Drivers lean on that light because a tire can lose pressure slowly and unevenly without any change in how the truck feels. A heavy pickup hides a soft tire well, particularly when it is loaded or towing. By the time a driver notices a pull or a vibration, the tire may already be badly under-inflated, and the safety consequence in the NHTSA record is blunt: a warning light that fails to notify the driver “increases the risk of a crash.”
What Chrysler told NHTSA about the sensor and the build window
The campaign record, NHTSA campaign 26V623000, names the defect plainly: the tire pressure monitoring system sensors may fail to detect low tire pressure and may fail to illuminate the warning. In Chrysler’s formal defect report, filed with NHTSA on September 29, 2026, the affected part is a tire pressure sensor supplied by Sensata Technologies of Attleboro, Massachusetts, under part number 68293199AA. The company ties the problem to a process change in the tire and wheel assembly that began July 1, 2025, and was updated March 17, 2026.
That timeline defines the population. Trucks built between July 1, 2025, and March 17, 2026, are in the campaign, while vehicles built outside that window, or fitted with assemblies from another supplier, are not. Chrysler estimates that all 16,385 trucks in the group carry the condition, a figure that leaves no room for a lucky truck. The filing also says the telltale may light only once a failure has occurred, so there is no early cue.
The internal chronology is short, and it moves from suspicion to confirmation in about six months. The company opened an investigation into inoperative monitors in some 2026 Ram 1500 trucks on March 17, 2026, and spent the spring and summer working with engineering and supplier-quality staff to identify the suspect trucks. A vehicle-build issue was recognized on September 16, and the company’s Vehicle Regulations Committee confirmed the noncompliance with the federal standard on September 22. The report lists no specific crash, injury or field incident tied to the condition, so the case rests on the build records and the standard rather than on a trail of damaged trucks.
Dealer inspection, owner letters and the wait
The fix is a dealer visit, and nothing in the record points to a redesigned part or a software change. Technicians will inspect the sensors and replace them as needed at no charge to the owner, according to the campaign record. Chrysler’s own recall number is 51D, and owners can reach the company’s customer service line at 1-800-853-1403. In an acknowledgment letter dated October 7, 2026, Alex Ansley, chief of NHTSA’s Recall Management Division, confirmed the scope and reminded the company that it must send NHTSA its owner communications within five days and file regular status reports.
The schedule leaves a gap. Dealers were notified and the vehicle identification number lookup opened on October 6, but the owner letters are not expected to be mailed until October 27, and the filing says no interim owner notification is planned. A Ram 1500 owner who wants an answer today can enter a VIN on NHTSA’s recall lookup, which shows whether the truck is in the campaign.
Until the repair is done, the practical defense is a manual one. A tire gauge costs a few dollars, and the pressure a truck should carry is printed on the placard in the driver’s door jamb. Checking all four tires monthly, and before a long trip or a heavy load, replaces the job the dashboard light is meant to do. The habit also pays off beyond this campaign, because a tire that has lost a few pounds from a cold snap or a slow leak shows up on a gauge long before it would trigger any automatic alert, which only fires once the loss is large.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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