A weak or dead battery may be caused by the radio not powering down correctly. If the backlight is flickering every 20 seconds that would confirm the fault and the radio would need to be replaced.

Some Dodge Avenger owners report experiencing starter problems, such as the starter burning out after just 15 minutes of driving, which may indicate a faulty starter motor. Additionally, some owners have noted incorrect engagement of the starter at high speeds, potentially pointing to underlying electrical issues within the starter system or wiring. Battery concerns, including weak or faulty batteries, are also reported to contribute to starter problems and incorrect engagement, complicating the vehicle's starting process. Furthermore, alternator troubles can affect the electrical system and impact the starter's performance, leading to these engagement issues. Some owners have identified problems with the ignition system, such as ignition failures or a bad fuel pump, which can also hinder starting the vehicle. Lastly, issues with the starter solenoid, common in Dodge vehicles, have been reported to cause intermittent starting problems. It is recommended for affected owners to seek inspection by a qualified mechanic to diagnose and resolve these issues promptly.