Ford said owners should follow the new walkaround solution if they think the signal between their car fob and door is being tampered with. The walkaround can indicate where a divide is located and block its possible damage with immediate effect.
The simple tip can prevent keyless car thieves from getting access to your car which is a major threat to road users.
Ford has urged drivers to place their fob under their chin with a finger on the unlock button.
Drivers should then tuck their chin to shield the fib as much as possible from any radio frequency jamming device nearby.
Owners should then walk around the car maintaining a position directly facing the car at all times.
Whilst walking slowly around the car, drivers should press the unlock button repeatedly.
When the car unlocks, the source of radio frequency interference will be behind you with your body blocking the jammer.
Ford warns keyless entry technology has been on a range of their cars, including the Fiesta, for over 10 years.
A statement from Ford said the group was continually developing new technology to deter thieves.
They said: “Ford Motor Company takes vehicle security seriously and continuously invests in technology to deter theft of, and from, our vehicles.
“A growing issue for the industry is the availability of security tools, which should be confined to dealerships and other specialists, being on uncontrolled public sale.
Ford’s new security warnings come after police received calls for members of the public who have been unable to get access to their vehicles at a supermarket in Royston.
Hertfordshire Police warned there seems to be an issue in the area with fobs not working properly and an investigation is underway.
Drivers who have difficulties accessing their vehicle at the Royston Tesco have been asked to speak to the on-duty manager at the branch.
Ford said criminals relay device equipment can compromise security while cars are being locked or left unattended.
Simon Hurr, Ford security specialist has urged drivers to check some simple security safeguards when leaving their cars.
Road users should check for visual clues to confirm the car is double-locked before they walk away.
Owners have also been advised to not leave their key free fobs just inside their front doors.
This could be in a close enough range of a car parked outside for criminals to tap into to gain access.
They warn drivers should store their keys further away in a suitable mental box or a shielded pouch which is available from Ford dealers.