2023-2024 Alfa Romeo Tonale / Dodge Hornet No Crank No Start TSB

Owners of 2023-2024 Alfa Romeo Tonale and Dodge Hornet vehicles may encounter a frustrating "no crank no start" condition. This issue, identified in Technical Service Bulletin (TSB) S2508000018, is often linked to a specific diagnostic trouble code (DTC) and a blown fuse in the vehicle's electrical system. This TSB, released in February 2025, provides guidance for technicians on how to diagnose and resolve this starting problem.

The core of the problem lies with the vehicle's Body Control Module (BCM) and the Front Power Distribution Center (PDC). When the vehicle fails to crank or start, it's frequently due to the BCM detecting an issue with the starter relay command, specifically an "Actuator Stuck Open" condition, and a compromised fuse that supplies power to the starter relay.

Symptoms

The primary symptom owners will notice is a "no crank no start" condition. This means that when attempting to start the vehicle, the engine will not turn over, and the vehicle will fail to ignite. This can be particularly prevalent when first starting the vehicle in colder weather conditions, indicating a potential sensitivity to temperature.

Fault Codes / DTCs

Technicians diagnosing this issue will likely find the following diagnostic trouble code (DTC) stored in the Body Control Module (BCM):

Code	Description
B1112-72	Run Relay Command - Actuator Stuck Open

Additionally, the problem is associated with an open or blown Fuse F03 20A located in the Front Power Distribution Center (PDC).

Diagnosis / Trigger Conditions

To accurately diagnose the "Alfa Romeo Tonale no crank no start" issue, a technician needs to confirm two key conditions. First, the DTC B1112-72 must be active in the BCM, indicating a problem with the run relay command. Second, Fuse F03, a 20-amp fuse in the Front Power Distribution Center (PDC), must be found open or blown. This fuse is critical as it supplies power to the starter relay, and its failure directly prevents the vehicle from starting. The issue is noted to occur more frequently during colder weather starts.

Repair Procedure Summary

Engineering has determined that replacing the original 20 amp fuse with a 25 amp fuse will enhance the circuit's performance and reliability, especially under challenging conditions like cold starts. The repair procedure for the "Alfa Romeo Tonale no crank no start" condition involves the following steps:

1. Locate the Front PDC: The Front Power Distribution Center is situated just forward of the driver's side front strut tower. Visual aids in the TSB show its exact location within the engine bay.
2. Access the PDC Cover: Unlock the PDC cover by rotating the ¼ turn screw. Once unlocked, the cover can be pulled up to expose the fuses.
3. Identify and Replace Fuse F03: Locate fuse F03, which will be a 20-amp fuse that is open or blown. Remove this fuse.
4. Install New Fuse: Replace the removed 20-amp fuse with a new 25-amp fuse. This upgrade is designed to provide improved circuit performance.
5. Reinstall and Test: Reinstall the PDC cover, ensuring it is securely locked. Then, confirm that the vehicle now cranks and starts successfully.

Important Warnings

This communication, TSB S2508000018, serves as a record of past experiences and does not authorize warranty repairs. It's crucial to understand that STAR Online does not provide definitive conclusions about what is wrong with a vehicle. Instead, it compiles similar cases to assist technicians. The technician is responsible for making the final decision on the appropriate course of action for diagnosis and repair.

Owner Action

If your 2023-2024 Alfa Romeo Tonale or Dodge Hornet is experiencing a "no crank no start" condition, especially with a check engine light or diagnostic codes, it is recommended to have your vehicle inspected by a qualified service technician. They can perform the necessary diagnosis to confirm the presence of DTC B1112-72 and an open F03 fuse, and then apply the recommended repair by replacing the fuse with the specified 25-amp version.

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Source: NHTSA ID: 11014537