SSM75185

Special Service Message
NOTE: A Special Service Message is a formal communication issued by Jaguar and carries the
same importance of a Technical Service Bulletin. An SSM is a quick method of communicating
"Need To Know" information to the technical service community. SSM's may be issued in advance
of a technical bulletin or may be the only communication on a given topic. All information
contained in Jaguar technical communications are intended for use by trained, professional
technicians with the knowledge, tools, and equipment required to complete the procedure
correctly and safely. It informs the Technicians of conditions that may occur on some vehicles, or
provides information that could assist in correct vehicle and diagnostic service.
SSM 75185 - High Voltage (HV) Coolant
Heater Internal failure
Models : E-Pace / X540
F-Pace / X761
I-Pace / X590
Engineer :Shilvock Matthew
Date Last 15 DEC 2020 09:28:39
Updated :
Content :Affected Vehicle range range:
20MY and onwards - PHEV variants of X540 & X761
19MY and onwards X590
Issue:
Customer symptom: No cabin heating while running in vehicle in EV mode. DTC
B1DC5-93 logged in the HVAC module
Cause:
JLR are currently investigating the root cause
Action:
1 . Clear all DTCs Conduct autoscan on HVAC module
2 . Conduct autoscan on HVAC module
3 . Check if DTC B1DC5-93 is still present. Is DTC present?
4 . On Live Data Read High Voltage Coolant Heater #1 – Overheat Count (22 9A
3C)
5 . Store results on Vf DB
6 . Switch the climate panel on, press the brake pedal and start switch. READY
will be displayed on the instrument cluster. Using the Jaguar Land Rover
approved diagnostic equipment, check the following datalogger signals 7 . a, High Voltage Coolant Heater #1 - Overheat Count (0x9A3C)
8 . b, High Voltage Coolant Heater #1 - Operating Status (0x99B9)
9 . c, High Voltage Coolant heater #1 - Error Status (0x99B8)
10. Using the Jaguar Land Rover approved diagnostic equipment, perform
routine - Unlock HV Coolant Heater 1 - Follow the on screen instructions
11. Is the concern still present – with the DTC logged in the HVAC module? If so
continue to Step 12 If not, hand the vehicle back to the customer
12. Replace HV Coolant Heater, refer to Topix for instructions for HV Coolant
Hearer replacement. 414-01B - BATTERY, MOUNTING AND CABLES INGENIUM I4 2.0L PETROL – PHEV - HIGH VOLTAGE INTERIOR HEATER. For
X590 – this is located in 412-01
13. Raise EPQR noting serial number of the removed HV Coolant Heater on the
report
14. Please prepare the part ready for return back to JLR
Version : 1
Jaguar Land Rover Limited 2000 - 2020 (Rel. 2685)