Cross traffic alert (CTA) system operation

Cross traffic alert (CTA) system operation  - Blind spot information system (BLIS ) With crosstraffic alert (CTA) (If 
equipped) - Driving - Lincoln MKS Owners Manual - Lincoln MKS

The CTA system warns the driver of approaching vehicles when R (Reverse) is selected and the vehicle is backing out of a front-in parking spot. It sounds a series of tones and flashes the BLIS indicator found on the exterior mirror on the side of the approaching vehicle. Additionally, the message center will display either, VEHICLE COMING FROM RIGHT or VEHICLE COMING FROM LEFT to warn the driver from which direction vehicles are approaching.

The system is not designed to prevent contact with other vehicles or objects. The system is designed to provide a warning to assist the driver in detecting vehicles in the blind zones. The system will not detect infrastructure, pedestrians, or bicyclists.

WARNING: To help avoid personal injury, NEVER use the CTA system as a replacement for using the side and rear view mirrors and looking over your shoulder before backing out of a parking space.

CTA is not a replacement for careful driving and only an assist.

The CTA system detects vehicles approaching up to 45 feet (14 meters) away. Coverage decreases when vehicles and objects in close proximity block the CTA sensors (refer to figure for approximate zone coverage areas [sensor obstructed for vehicle on left]). Backing slowly from the parking spot in these situations helps to increase the sensor coverage and effectiveness.

CTA coverage also decreases when parking at shallow angles (refer to

CTA coverage also decreases when parking at shallow angles (refer to figure for approximate zone coverage areas [sensor obstructed for vehicle on left]).

CTA detection limitations: Due to the nature of radar technology, there may be certain instances where vehicles entering and exiting the blind spot zones may not be detected. Below is a list of circumstances that may cause non-detection:

Debris build-up on the rear quarter panel fascias
The rear quarter panel radar beams are obstructed or partially obstructed by an adjacently parked vehicle or object.
Approaching vehicles passing at speeds greater than 15 mph (24 km/h)
Severe weather conditions
Driving in reverse faster than 3 mph (5 km/h)
Backing out of an angled parking spot

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