If you are involved in a car accident in California that is not your fault, it's important to take certain steps to protect your interests and ensure a smooth claims process. Here's a general guideline of what to do:

1. Stay at the Scene: It is crucial to remain at the scene of the accident until it is appropriate to leave. Leaving the scene of an accident, even if you believe it was not your fault, may result in legal consequences.

2. Ensure Safety: Check yourself and others involved in the accident for injuries. If anyone requires immediate medical attention, call 911 for emergency medical assistance.

3. Contact Law Enforcement: If there are injuries, significant property damage, or any dispute about liability, call the local police or California Highway Patrol (CHP) to report the accident. A police report can provide an official record of the incident, which can be valuable during the claims process.

4. Gather Information: Collect as much information as possible from the scene. This includes:

   • Exchange information: Obtain the contact details, insurance information, and driver's license information of all parties involved in the accident.

   • Witness statements: If there are witnesses present, gather their names and contact information. Their statements may help establish the facts of the accident.

   • Accident details: Take photos or videos of the accident scene, including the damage to all vehicles involved, road conditions, traffic signs, and any other relevant details. This documentation can be useful when filing a claim.

5. Notify Your Insurance Company: Report the accident to your insurance company as soon as possible, even if you believe the accident was not your fault. Provide them with accurate and detailed information about the accident, and follow their instructions regarding the claims process.

6. Seek Medical Attention: It is important to seek medical evaluation, even if you don't feel immediate pain or have apparent injuries. Some injuries may manifest later, and prompt medical attention will help document your injuries and ensure your well-being.

7. Consult with an Attorney: Consider consulting with a personal injury attorney who specializes in car accidents. They can evaluate your case, provide legal advice, and represent your interests during the claims process. An attorney can help you navigate complex legal issues and negotiate with insurance companies on your behalf.

8. Document Damages and Expenses: Keep a record of all damages, expenses, and losses related to the accident. This includes medical bills, vehicle repair receipts, rental car costs, lost wages, and any other financial impact you experience.

Remember, this is a general guideline, and the specific steps may vary depending on the circumstances of the accident. Consulting with a qualified attorney who is familiar with California laws is advisable to ensure you take the appropriate actions based on your situation.