Symptoms TPMS warning light does not illuminate when a tire is significantly under-inflated; 'service tire pressure system' cluster message; malfunction indicator lamp; dashes displayed in place of the tire pressure placard values; tire pressure readings that never update. Frequently no warning at all before the failure.
Why it matters for your claim Measured relevance. On its own this is a thin lemon-law claim: TPMS is a secondary warning system, the defect does not impair drivability, and a single successful software reprogram under the recall does not approach the repair-attempt threshold of Cal. Civ. Code § 1793.2(d). The card matters where the repair history already shows repeat TPMS / RF-hub complaints (dashes in place of placard values, 'service tire pressure system' messages, sensors that will not relearn or update) before or after the 54D reprogram, or where a TPMS that failed to warn preceded a tire failure or blowout. Those visits count toward the repair-attempt tally, and the FMVSS 138 noncompliance supports characterizing the nonconformity as safety-related. Most useful stacked with other open recalls on the same 2024-2026 build cohort for the cumulative days-out-of-service argument.
Typical fix Under 26V559 (FCA 54D) dealers reprogram the RFH module with updated software, free of charge. Remedy not yet available to owners: dealers notified Sep 9, 2026; owner letters phased Sep 29 - Oct 21, 2026; no interim letter. Owners are told to check tire pressures manually with a gauge until the update is done.
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