NHTSA Service Bulletin 11029662: 2024 Chrysler Pacifica
Official manufacturer communication context for 2024 Chrysler Pacifica, with affected products, buyer checks and links into Carchieve recall, problem and VIN research.
Reviewed June 2026 from NHTSA manufacturer communication and service bulletin records. Carchieve is independent and not affiliated with any vehicle manufacturer or government agency.
Flash: Anti-Lock Brakes (ABS) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Code (DTC): **C151D-00 - Tire Pressure Sensor Location Undetermined.** U0121-00 - Lost Communication With Anti-lock Brake System (ABS) Control Module. U1110 - Lost Vehicle Speed Message. U120C - Lost Brake Booster Signal. Customers may also comment on one or more of the following: **The Service TPM System message may display on the cluster after a tire rotation.** NOTE: The vehicle will not automatically relearn tire locations and the process will have to be manually performed by a dealer technician. Electronic Parking Brake (EPB) is not responding and not allowing the driver to release EPB.** NOTE: This takes place when the vehicle in on standstill, the driver stays in the car for more than 10 minutes and if the driver presses the Electric Parking Brake (EPB) button. The Electronic Stability Control (ESC) module wakes up in silent mode and if another wake up request occurs (i.e. pedal press, door, ajar etc.) during this time the module locks up in no communication mode and other modules sets DTC against ESC module. ESC won't be operational and vehicle won't be able to shift out of park Antilock Brake System (ABS) light is on in the Instrument Panel Cluster (IPC). This bulletin involves reprogramming the ABS module with the latest available software.
What this bulletin may mean before buying
Treat this as service research, not a verdict on one car. Before you buy, compare this communication with official recall campaigns, model-level owner complaint patterns, and the exact vehicle’s VIN-decoded specifications. A bulletin can help you ask a seller or dealer sharper questions about software updates, known repairs, warranty extensions and service history.
Affected products listed in this communication
Buyer checklist
- Run the 17-character VIN and confirm the year, make, model, engine and equipment match the listing.
- Check recall campaign pages for safety actions that may require dealer repair.
- Compare this bulletin with common problem pages for the same model and component area.
- Ask the seller or dealer whether the bulletin procedure, update or inspection has already been completed.
- Use the used-car buying checklist and get an independent inspection.
Frequently asked questions
What is NHTSA service bulletin 11029662?
Flash: Anti-Lock Brakes (ABS) Updates Customers must experience a Malfunction Indicator Lamp (MIL) illumination and the vehicle must SYMPTOM: exhibit/set one or more of the following Diagnostic Trouble Code (DTC): **C151D-00 - Tire Pressure Sensor Location Undetermined.** U0121-00 - Lost Communication With Anti-lock Brake System (ABS) Control Module. U1110 - Lost Vehicle Speed Message. U120C - Lost Brake Booster.
Is a service bulletin the same as a recall?
No. A recall is a safety campaign with a required remedy for affected VINs. A service bulletin or manufacturer communication usually describes diagnostic, repair, software, warranty or service information.
How should a used-car buyer use this bulletin?
Use it as a research signal. Compare it with recalls, owner complaints, service records, a VIN report and an independent inspection before buying.
Check the exact VIN before you buy
Model-level pages show public safety patterns. A full VIN report helps confirm the exact vehicle, decoded specs, recall applicability and buyer checks.
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