Redeem your Discount voucher online or by calling JMZ Roadside Service.  Provide the the Discount Voucher Number to get your discount on any emergency roadside service.  No Limit to purchase, must be redeemed by expiration date on voucher. We accept competitor discount vouchers/certificates not to exceed current face value. Discount vouchers must be for Roadside services, or any other vehicle services including mechanical, electrical, or general repairs.