2017 Edge Titanium - Blind Spot System Fault

[Abuelo56]

Bought the new sensors, now I'm trying to find their location to go in and replace them, anybody has a clue and/or a picture?

[Wubster100]

BLIS
NOTE: If a trailer is attached to the vehicle, the BLIS may detect the trailer and cause a false alert. It is recommended to manually
turn the BLIS and CTA system off via the IPC menu if a trailer is attached to the vehicle.
The BLIS provides alerts to the driver when the vehicle is in a forward gear and the vehicle speeds is greater than 10 km/h (6 mph).
The BLIS can trigger an alert for vehicles that enter the blind zone from the rear, front, or merge into the blind zone from the side. The exterior
mirror BLIS/ CTA LED illuminates in the right and/or left exterior mirror when a target is present. For vehicles that pass through the blind zone
quickly, typically less than 2 seconds, the BLIS may not trigger an alert.
If a turn signal is active while BLIS has detected a target in the blind zone, the BLIS/ CTA LED flashes rapidly. When the turn signal is off,
the BLIS target warnings are a constant LED illumination.
NOTE: The BLIS is not intended to detect parked vehicles, pedestrians, or objects such as fences, guard rails or trees.
NOTE: There should be no bumper stickers or body filler material used on the rear side bumper cover in the vicinity of the SODL or
SODR.
Due to the nature of radar technology, false alerts may occur under certain circumstances. False alerts occur when the LED illuminates with no
target present. False alerts up to 3% (3 out of 100 targets) is considered normal operation. False alerts are temporary and self-correcting. False
alerts may be caused by sharp turns around a pole or building, jogging pedestrians or fast moving shopping carts.
Missed targets occur when a target is present and the LED does not illuminate. Missed targets up to 1% (1 out of 100 targets) is considered
normal operation.
Circumstances that cause missed alerts are:

• Debris build-up or bumper stickers on the rear bumper sides
• Certain maneuvering of the vehicles entering and exiting the blind zone
• Vehicles passing through the blind zone at high rates of speed
• When several vehicles forming a convoy pass through the blind zone

The BLIS may not detect an adjacent target immediately when the vehicle accelerates from a standing start with another vehicle alongside.
CTA
NOTE: The CTA system is only active when reverse gear is selected.
NOTE: If a trailer is attached to the vehicle, the CTA system may detect the trailer and cause a false alert. It is recommended to
manually turn the BLIS and CTA system off via the IPC menu if trailer is attached to the vehicle.
When the transmission is in reverse, the CTA system can detect a vehicle or a bicycle that is approaching at a speed between 8 km/h and 64 km/h
(5 mph and 40 mph) and time to impact is between 1 and 2.5 seconds. The distance at which an alert is generated varies depending on the speed
of the approaching vehicles or bicycles. The CTA system response time and performance can degrade if vehicles are approaching at speeds
greater than 64 km/h (40 mph).
An adjacent parked vehicle or object can affect the systems ability to detect approaching vehicles or bicycles (refer to figure 1). Parking at
extreme angles can further affect the systems ability to detect approaching vehicles or bicycles (refer to figure 2).
Backing towards a curve road can also affect systems ability to detect approaching vehicles or bicycles (refer to figure 3).
CTA detection zones:
The CTA system is designed to detect any objects approaching the vehicle at a speed equal to or greater than 8 km/h (5 mph). This includes
vehicles and bicycles. The CTA system has some detection limitations due to the nature of the radar technology used by the SODL and SODR.
The system cannot normally detect stationary vehicles, humans, animals or objects such as fences, guard rails or trees.
Circumstances that may cause non-detection are:

• Debris build-up or bumper stickers on the rear bumper sides
• The rear quarter panel of the vehicle is obstructed or partially obstructed by an adjacently parked vehicle or object
• Vehicle approaching at speeds greater than 64 km/h (40 mph)
• Driving in reverse faster than 12 km/h (8 mph)
• Damage to sensor and/or sensor area

Due to the nature of radar technology, there may be certain instances when the CTA system alerts the operator, when no object or vehicle is
present while backing up. This is known as a false alert. False alerts up to 3% of the time (3 times out of 100 reversals) are considered normal. A
false alert may occur when backing out of a garage or backing into a parking space and objects or vehicles are very close to the radar sensors.
False alerts are temporary and self-correcting.
Missed targets occur when a target is present and the LED does not illuminate. Missed targets up to 1% (1 out of 100 targets) is considered
normal operation.
Circumstances that cause missed alerts are:

• Debris build-up or bumper stickers on the rear bumper sides
• Certain maneuvering of the vehicles entering and exiting the detection zone
• Vehicles passing through the detection zone at high rates of speed
• When several vehicles forming a convoy pass through the detection zone

Exterior Mirror Indication
When the BLIS or CTA system is active and an object is detected by the SODL or SODR, the BLIS/ CTA LED command message is
sent from the SODL or SODR to the DDM or PDM. The DDM and PDM supply voltage and ground to illuminate their respective exterior mirror
BLIS/ CTA LED based on messages received from the SODL and SODR.
Each time the vehicle is started, the SODL and SODR command the DDM and PDM to illuminate the exterior mirror BLIS/ CTA Light
Emitting Diodes (LEDs) for approximately 3 seconds, indicating the BLIS and CTA system is operational.
If a BLIS or CTA system fault is present, the exterior mirror BLIS/ CTA Light Emitting Diodes (LEDs) remains off, the IPC BLIS
RTT illuminates and a message center warning displays BLIND SPOT SYSTEM FAULT.
BLIS and CTA Message Center Function
NOTE: CTA system faults may not be detected until the transmission is placed in reverse.
NOTE: The BLIS and CTA system menus in the message center are not available when a MyKey restricted key is in use.
The BLIS can be turned off by using the blind spot on/off function in the message center. When the BLIS has been turned off by the driver
or if a system fault is present, the BLIS RTT in the message center remains on. When turning the system on or off, the exterior mirror Light
Emitting Diodes (LEDs) flash 2 times. When the BLIS is turned off, the driver cannot receive any alerts. The system remains off until turned
back on by the driver.
The CTA system can be turned off by selecting the CTA system on/off function in the message center. The system defaults to on with each ignition
cycle.
There are some system faults that set Diagnostic Trouble Codes (DTCs) in the SODL, SODR, DDM or PDM. These Diagnostic Trouble Codes
(DTCs) can set a message in the IPC message center that displays BLIND SPOT SYSTEM FAULT and/or CROSS TRAFFIC SYSTEM
FAULT. There are also symptom based faults that do not set a DTC.
Blocked Sensor
NOTE: Blockage sensing becomes active after the wipers are activated.
NOTE: A blocked state is not a system fault. A blocked state is a normal mode of operation under blocked conditions.
An excessive build-up of materials on the rear bumper sides, such as mud or snow, can cause the BLIS or CTA system functionality to
degrade. Heavy rain can have the same affect on the system. If a blocked state is detected, the SODL and SODR blockage sensing senses the
performance degradation and enters the SODL and SODR into a blocked state. The performance degradation means alerting late on targets or
additional missed targets. Upon entering a blocked state, the SODL and/or SODR send a status message over the MS-CAN to the GWM. The
GWM then sends the status message to the IPC on the HS-CAN3. The message center displays BLIND SPOT NOT AVAILABLE SENSOR
BLOCKED or CROSS TRAFFIC NOT AVAILABLE SENSOR BLOCKED and the LH and RH exterior mirror BLIS/ CTA Light
Emitting Diodes (LEDs) illuminate.
The message center warning can be cleared by the driver, but the amber BLIS off RTT in the IPC remains illuminated. A blocked state will
self-clear when blockage sensing senses performance has returned to normal operation. The ignition can also be cycled off to clear the blocked
state. If the blockage is still present after the ignition cycle, or after some drive time the system detects again that it is blocked, the blocked sensor
message is displayed again in the message center and the amber BLIS off IPC RTT is illuminated again.
Due to the nature of radar technology, it is possible to get a blocked sensor warning without the radar sensor being blocked. This is rare and is
known as a false blockage warning. A false blocked condition either self-clears or clears after an ignition cycle.
Component Description
SODL / SODR
The SODL and SODR are radar based sensors that are located rearward of the rear wheel under the bumper cover. These sensors detect targets
for the BLIS and CTA system. The modules are capable of storing Diagnostic Trouble Codes (DTCs) for the BLIS or CTA system when
a concern exists. The SODL and SODR communicate through the MS-CAN.
The SODL and SODR require PMI when replaced.
DDM/ PDM
The DDM and PDM supply voltage and ground to illuminate their respective exterior mirror BLIS/ CTA LED based on messages received
from the SODL and SODR. The modules are capable of storing Diagnostic Trouble Codes (DTCs) for the BLIS or CTA system when a
concern exists. The DDM and PDM communicate through the MS-CAN.
The DDM and PDM require PMI when replaced.
BLIS/ CTA LED
The BLIS/ CTA LED is integral to the LH and RH exterior mirror glass.

[Wubster100]

Rear Bumper Cover - Removal and Installation - 2021 Edge Workshop Manual.pdf