Chrysler, the Stellantis-owned maker of Jeep vehicles, has recalled 201,975 SUVs because a software error can prevent the tire pressure monitoring system from detecting low pressure or from lighting its warning lamp. A driver relying on that lamp would get no signal while a tire loses air, and the National Highway Traffic Safety Administration says the condition increases the risk of a crash.
The recall covers Grand Cherokee, Grand Wagoneer and Wagoneer models built from the 2024 to the 2026 model years, plus a single 2026 Cherokee. The fix is a software update that dealers install at no cost.
Which Jeeps Are in NHTSA Campaign 26V559
NHTSA’s record for campaign 26V559000, which FCA numbers 54D, lists 201,975 potentially affected vehicles. The model list runs across the full-size Jeep range: the 2024 and 2025 Wagoneer, the 2024 through 2026 Grand Cherokee, Grand Cherokee L, Grand Cherokee 4xe and Grand Wagoneer, the 2025 Wagoneer L, the 2025 and 2026 Grand Wagoneer L, and the 2026 Cherokee. NHTSA received the report on Sept. 1, 2026, and made affected VINs searchable on Sept. 9.
Two outlets that read the manufacturer’s filing carry a total one vehicle higher, 201,976. AutoEvolution put the Grand Cherokee at 113,647 vehicles and the three-row Grand Cherokee L at 57,467, which together make up the large majority of the recall, and listed the Cherokee and a Grand Wagoneer L plug-in hybrid at one vehicle each. The NHTSA record is the figure used here.
Build windows are narrower than the model-year labels suggest. According to Pickup Truck Talk, which summarized the filing, the Grand Cherokee window runs from Feb. 13, 2024 to June 12, 2026, while the Grand Wagoneer window ends Feb. 17, 2026.
A Radio Frequency Hub That Misses Low Pressure
The defect is in the software of the radio frequency hub, the module that receives the tire sensors’ signals. NHTSA’s summary states: “Due to a software error, the tire pressure monitoring system may fail to detect low tire pressure,” and the warning light may also fail to illuminate. FCA acknowledged the vehicles do not meet Federal Motor Vehicle Safety Standard 138, the rule that requires a system able to detect significant underinflation and light a telltale.
The module comes from a supplier, and the failure gives no advance sign. AutoEvolution, reading the filing, reported that the radio frequency hub is supplied by Valeo North America and that the system gives no warning before it stops working. Depending on the failure mode, the instrument cluster may show a service message for the tire pressure system, a malfunction indicator lamp, or dashes in place of the placard pressure values, which means some owners may already have seen a symptom without knowing its cause. Chrysler states in the notice that the software was used only during the suspect build periods, and that similar vehicles outside the recall had working tire pressure monitoring.
The consequence line is short: a warning light that fails to tell the driver about low pressure increases the risk of a crash. A tire running underinflated builds heat, wears unevenly and is more likely to fail at speed, and the system exists to catch that before a blowout does.
AutoEvolution’s account of the Part 573 timeline shows how long the problem took to pin down. FCA’s compliance team opened an investigation on Aug. 28, 2025, after engineering testing raised a possible FMVSS 138 noncompliance. A first root cause surfaced by December 2025, a second in March 2026 that widened the scope to 2026 model-year vehicles, and a third in May. The scope was finalized in July, and the noncompliance determination followed on Aug. 26, 2026.
Software Reprogramming and the Mailing Schedule
Dealers will reprogram the radio frequency hub with updated software, and the repair needs no parts. NHTSA’s notification text says owner letters were mailed beginning Sept. 17, 2026; the manufacturer’s filing as summarized by AutoEvolution describes first-class mail starting about Sept. 29 and phased through Oct. 21, so the dates owners received a letter may differ by build group. Chrysler customer service takes calls at 1-800-853-1403, and the recall number to cite is 54D.
Local TV coverage, including KTVU’s report on the recall, put the size at more than 200,000 vehicles and pointed owners to NHTSA’s VIN lookup. Work Truck Online includes the recall in its October 2026 roundup with the same 201,975 total.
For a Jeep inside the build windows, the practical gap is between the owner letter and the dealer visit. Until the update is installed, a Grand Cherokee’s dashboard lamp is not a reliable check on its tires, and a manual pressure gauge reading against the door-jamb placard is. NHTSA’s record names Chrysler’s number for the campaign, 54D, and the agency’s own hotline can confirm whether a specific VIN carries an open recall.
This article was produced with the assistance of AI and reviewed by Morning Overview editors prior to publication.
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