Is one of the heirs obligated to pay the costs of repairing the car that he crashed during the lifetime of the deceased, after their death?

Accident liability falls on the direct driver, not the car owner.

If the car's liability was established against the heir during the lifetime of the deceased, it remains with them after death, unless it is proven that the deceased waived or relinquished this right. This is because all financial rights related to the deceased's property transfer to their heirs.

Heirs inherit what was connected to the property, but they do not inherit what was connected to the deceased's person, intellect, and desires.