Tennessee Code Title 66. Property § 66-19-103

(b)(1)(A) Garagekeepers are entitled to a lien upon all motor vehicles that lawfully come into their possession and are retained in their possession until all reasonable charges due are paid.  A garagekeeper may, after thirty (30) days, enforce such lien in the manner prescribed for the enforcement of artisans' liens under §§ 66-14-102 -- 66-14-106;  except, that the garagekeeper:

(B) If the motor vehicle, including any associated rental equipment, clearly identifies a rental vehicle company, the United States department of transportation (USDOT) number issued by the federal motor carrier safety administration (FMCSA), a registration plate issued and attached to the motor vehicle described in § 55-4-113(a)(2), or a registration plate issued and attached to a trailer described in § 55-4-113(a)(5), and a garagekeeper lawfully comes into possession of the vehicle and any associated equipment, then the garagekeeper shall notify the rental vehicle company, the owner of the motor vehicle identified by the USDOT number, or the owner assigned to the registration plate issued and attached to the motor vehicle described in § 55-4-113(a)(2) or a registration plate issued and attached to the trailer described in § 55-4-113(a)(5), at the address identified with the USDOT number, rental equipment information, or the vehicle's registration within three (3) business days of taking possession of such vehicle or equipment using three-day delivery.

(3)(A) In addition to any other penalty provided for a violation of this section, a violation of subdivision (b)(1) is also a violation of the Tennessee Consumer Protection Act of 1977, compiled in title 47, chapter 18, part 1.  A violation of subdivision (b)(1) constitutes an unfair or deceptive act or practice affecting trade or commerce, and is subject to the penalties and remedies as provided in the Tennessee Consumer Protection Act of 1977, in addition to the penalties and remedies provided in this section.

(B) The attorney general and reporter has all of the investigative and enforcement authority that the attorney general and reporter has under the Tennessee Consumer Protection Act of 1977 relating to alleged violations of subdivision (b)(1).  The attorney general and reporter may institute any proceedings involving alleged violations of this part in Davidson County circuit or chancery court or any other venue otherwise permitted by law.

(C) Costs of any kind or nature must not be taxed against the attorney general and reporter or the state in actions commenced under this section.

(D) A rental vehicle company, the owner of the motor vehicle identified by the USDOT number, or the owner assigned to the registration plate issued and attached to the motor vehicle described in § 55-4-113(a)(2) or a registration plate issued and attached to the trailer described in § 55-4-113(a)(5) may seek relief under the Tennessee Consumer Protection Act, in addition to remedies provided under this section.

(A) The name of the officer giving authorization;

(B) The year, make, model, and color of the vehicle to be towed;

(C) The reason for the tow;

(D) The license plate number, if any;  and

(E) The VIN, if it is ascertainable.

(A) A written record of the name of the person whom the garagekeeper attempted to notify, the date and time of the attempt, and the signature of the person who made the attempted notification;  and

(B) A copy of the confirmation of receipt, which may include an electronic signature, photograph of delivery, or other verifiable proof that the notice was delivered to the address of the last known registered owner of the motor vehicle.