SSM72565

TOPix - SSM72565 - L550 + L538, HVAC incorrect function - Airflow not as expected, 1... Page 1 of 2
Reference
SSM72565
Models
Discovery Sport / L550
Range Rover Evoque / L538
Title
L550 + L538, HVAC incorrect function - Airflow not as expected, loss of climatic seat
control
Category
Electrical
Last modified
19-Dec-2015 00:00:00
Symptom
208000 Climate Control
Content
Issue:
Customers may report loss of climate control in HVAC system and/or seat heating,
which is due to HVAC software communication issues on the LIN Bus.
The communication ceases upon shutdown and does not recover upon wake up.
Symptoms include:
• DTC's.
• HVAC blower becomes inoperative because there is no Stepper Control.
• No LIN communication to the seats and therefore, no climate seat control.
Cause:
HVAC software.
Action:
The following method will load a software file to SOD using the Manual Patch Update
process.
This Manual Patch will stay on the SOD machine.
1. Login to SOD.
2. Select 'Continue' on the SOD Warning screen.
3. Select 'Settings' tab.
4. Select 'System Utilities'.
5. Select 'Manual Patch Update'.
6. A pop-up will be displayed for Manual patch selection dialog box.
7. Enter 'MP_JLR_R0002' in the Manual patch selection dialog box.
8. Select 'OK'.
9. The 'Software Management Wizard' will then download the fix file.
10. The Manual patch update information pop up will ask 'Do you want to install the
update now?' Select 'OK'.
11. Select 'OK' when the message 'Please shut down SOD before continuing' is
displayed. DO NOT SHUT DOWN THE PC.
12. 'Please wait' message is displayed.
http://topix.landrover.jlrext.com/topix/service/archive/605690/index
1/7/2016
TOPix - SSM72565 - L550 + L538, HVAC incorrect function - Airflow not as expected, 1... Page 2 of 2
13. Select 'OK' when the 'Package has been installed' message is displayed.
14. Select 'OK' in the Manual patch update information pop up.
15. Close the Internet Explorer Window where the SOD program runs.
16. Start a new SOD session.
17. Program the Heating Ventilation Air Conditioning control module (HVAC).
18. Close the SOD session.
If this Manual patch fails to correct the concern then a Technical Assistance should be
escalated.
Note: If this manual patch is not being installed on all SOD machines you may wish to
consider labelling the machine.
http://topix.landrover.jlrext.com/topix/service/archive/605690/index
1/7/2016