NHTSA ID Number: 11007848
Manufacturer Communication Number: 36987
TSB/Document Date: 2024-09-17
Summary
This is a Technical Journal: Park Assistance System enhanced troubleshooting. Water and/or dirt can be stuck between the sensor and the sensor holder. Verify that the holder is clean and test that water can easily be drained away via the drain hole and clean the sensor. For cleaning of sensors and holder use Isopropanol.
Service and Parts Business
Technical Journal
TITLE:
Park Assistance System enhanced troubleshooting
REF NO:
ISSUING DEPARTMENT:
CAR MARKET:
TJ 36987.1.0
Technical Service
United States and Canada
PARTNER:
ISSUE DATE:
STATUS DATE:
3 US 7515 Polestar
2024-07-11
2024-08-07
FUNC GROUP:
FUNC DESC:
3871
Parking assistance
Page 1 of 3
DESCRIPTION:
If the vehicle shows symptoms of a faulty PAS without specific parts defects together with one (or
more) of mentioned DTCs below, follow the advice under “Service”.
ASDM = Active Safety Domain Master
PAS = Parking Assistance Sensor
CSC Customer Symptom Codes
Code
Description
KS
Front/rear park assist/Does not work
DTC Diagnostic Trouble Codes
Control Module
Code
Fault Type
ASDM
B1B4497
Permanent
ASDM
B1B4897
Permanent
ASDM
B1B3897
Permanent
ASDM
B1B4297
Permanent
ASDM
B1B4097
Permanent
ASDM
B13F397
Permanent
ASDM
B13F497
Permanent
ASDM
B1B3697
Permanent
ASDM
B129D97
Permanent
ASDM
B129C97
Permanent
Produced and printed in the USA and available as an electronic document.
© Polestar 2024
Technical Journal 36987.1.0
Vehicle Type
Type
Eng
Eng
Desc
Sales Body
Gear
Steer Model Year
534
2021-9999
Plant
Chassis range
Struc Week
Range
-
202007-999952
SERVICE:
In case of customer complaints for the following:
1) In case there are no DTCs, only False detection/warning:
•
Water and/or dirt can be stuck between the sensor and the sensor holder.
Verify that the holder is clean and test that water can easily be drained away via the drain hole and
clean the sensor. For cleaning of sensors and holder use Isopropanol.
•
The sensor is not centered in the bumper hole and therefore its membrane is in contact with the
bumper. If so, the conduction of sound can be transmitted to a nearby sensor. The reason for this
misalignment can be that the sensor cable is pulling the sensor so the sensor is tilted or the holder
is not properly centered over the bumper hole.
Verify that the sensor is centered in the middle of the bumper hole, that is not tilted and the sensor
does not press on either side, and that the cable is not taut.
•
If the rubber ring around the sensor is folded, damaged, or overpainted, this can lead to false
warnings.
Remedied by installing an unpainted rubber ring unfolded around the sensor.
•
Loose sensor or loose sensor holder can lead to a false warning or a failure warning will be
missing.
Remedied by mounting the loose detail properly according to Polestar’s instructions.
•
The sensor membrane can be damaged by stones/blasting and corrosion can occur. This can
cause an increased risk of false warnings or missing failure detection.
Remedied by painting or changing the sensor.
•
Verify that no accessories, original parts, or damaged outer parts of the car can be in the ultrasound spreading region from the sensor.
•
In case of false warnings without any DTC from a specific sensor.
Verify by switching the sensor position between the right and left side symmetrically to check if
symptoms follow the sensor or place.
Verify that the registration plate or its holder is not in the area for detecting of the ultrasonic
sensors.
2) If there is one or more confirmed DTCs:
•
DTCs are registered as internal diagnostics of the sensor or control unit (ASDM) if something is
wrong, sometimes it can set incorrect DTC.
Verify by switching the sensor position between the right and left side symmetrically and erase
DTC. If the error code was moved to the new sensor position, replace the sensor. If the DTC is the
same as the new sensor at the original position, control cabling to the sensor and placement for
the holder. Please follow the VIDA instructions before replacing that part.
•
Interruptions can disturb the control unit (ASDM) and can cause DTC for several/all sensors at the
same time.
Verify if the DTC can be found in ASDM for cabling, remedied or replace the cable harness, and
erase the DTC.
Page 2 of 3
2024-08-07
Technical Journal 36987.1.0
Warranty claim info:
To get a warranty claim accepted for a job described in this TJ, use the corresponding VST OP number
stated in this TJ.
Note that the TJ number must be stated in the repair order text.
VST Operation Number
VST Operation Number
Description
99922-2
General reimbursement acc. to TJ/QB
LABOR TIME:
Labor time subject to change without notice.
VEHICLE REPORT:
Yes, please submit a Vehicle Report if the service solution described in this TJ has no effect. Use
concern area “Vehicle Report” and sub concern area “Support not needed”, use function group 3871.
2024-08-07
Page 3 of 3
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TSB/Document ID: 36987
Replacement Service Bulletin Number:
MFR Communication Date: 2024-08-13
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: BACK OVER PREVENTION: WARNINGS
MFR Component System:
MFR Component Subsystem:
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