Here are some additional reasons:
* Liability concerns: If a car manufacturer provides customers with repair instructions, they could be held liable if the customer damages their car or injures themselves while performing the repairs.
* Warranty concerns: If a car manufacturer provides customers with repair instructions, they may void the warranty on the car if the customer performs the repairs incorrectly.
* Complexity of repairs: Many car repairs are complex and require specialized tools and knowledge. Providing customers with repair instructions would not guarantee that they would be able to perform the repairs correctly.
* Safety concerns: Some car repairs can be dangerous if they are not performed correctly. Providing customers with repair instructions would not guarantee that they would take the necessary safety precautions.
Car manufacturers instead recommend that customers take their vehicles to authorized dealers or qualified repair shops for any repairs that are needed. This ensures that the repairs will be performed correctly and safely, and that the warranty on the car will not be voided.