No. 2007.1

Bulletin #: 2007.1
Advanced Technical Information
Part ID: 2785
2
Adaptive Cruise Control Disengages Along with a Warning and Fault D00002
Vehicles Affected
Models
Model Year
Model Type
VIN Range
Vehicle-Specific Equipment
All
As of 2012
all
N/A
Adaptive Cruise Control
Revision History
Revision
Release Date
Changes
0
April 30, 2020
Original document
1
May 1, 2020
Update of Technical Background
Condition
The customer complains that during long trips, adaptive cruise control (ACC) disengages and displays a warning 		
message. The customer may report that a significant portion of the trip had: (1) bad weather, (2) few other vehicles 		
present, or (3) few turns or hills.
The workshop finds fault code D00002 (Sensor Blind) in the Adaptive cruise control (ACC) ECU.
Technical Background
This condition occurs by design. This is not a product defect.
Multiple conditions may cause this issue:
1.
		
		
Ice/Snow: If ice or snow blocks the distance sensor, the ACC system recognizes that it is ‘blind’ and will 		
disengage and display a warning message unless the blockage is cleared. Of course, this ice and snow will 		
likely not be present during the workshop evaluation.
2.
		
		
Featureless terrain/few other vehicles: If the road is featureless (i.e. there are very few turns and hills) and 		
the radar does not see another vehicle or object for an extended distance or time, it will also assume 		
it is ‘blind’ and disengage with a warning message. This is a limitation of the system.
AfterSales
May 1, 2020
Page 1 of 2
Bulletin #: 2007.1
Advanced Technical Information
Part ID: 2785
2
Service Information
Ensure the distance sensor is clean and should remain reasonably free of road debris.
You can inform the customer of these conditions. This should help moderate customer expectations.
Warranty
Please be sure to document your findings in PQIS thoroughly.
Use the following PQIS coding:
Cause location:		
27850 		
Cause symptom:
1613 		
Distance measuring sensor control unit
No function occasionally
Search Items
ACC, warning, radar, eye, distance sensor
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training courses. They are
written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special tools may be necessary in
order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the safe operation of your vehicle, and
may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and safely. Part numbers listed in these bulletins
are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a discrepancy, the work procedures in the PIWIS Tester
are the ones that must be followed.
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AfterSales
May 1, 2020
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