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Service bulletins for the 2012 Jaguar XK

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

305 on file from NHTSA, as of 2026-10-19.

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Only bulletins with component: 12-volt battery are shown. Show all

Bulletins, newest first
JTB00446NAS32017-04-06. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES. "SITUATION: THE VEHICLE BATTERY MAY BE FLAT OR ONE OF THE FOLLOWING MESSAGES/WARNING LIGHTS MAY BE DISPLAYED ON THE INSTRUMENT CLUSTER. • FAULTY GENERATOR • FAULTY BATTERY MONITORING SYSTEM (BMS) • THE CHARGE WARNING INDICATOR IS ILLUMINATED WHEN THE ENGINE IS RUNNING CAUSE: THE POWER SUPPLY IS A FULLY INTEGRATED SYSTEM THAT REQUIRES SDD TO DIAGNOSE OVERALL FUNCTIONALITY ROBUSTLY TO MAKE SURE CUSTOMER SATISFACTION IS MET VIA RIGHT FIRST TIME DIAGNOSIS."
JTB00446NAS22017-04-05. Service bulletin. EQUIPMENT ADAPTIVE/MOBILITY; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. "SITUATION: THE VEHICLE BATTERY MAY BE FLAT OR ONE OF THE FOLLOWING MESSAGES/WARNING LIGHTS MAY BE DISPLAYED ON THE INSTRUMENT CLUSTER. • FAULTY GENERATOR • FAULTY BATTERY MONITORING SYSTEM (BMS) • THE CHARGE WARNING INDICATOR IS ILLUMINATED WHEN THE ENGINE IS RUNNING CAUSE: THE POWER SUPPLY IS A FULLY INTEGRATED SYSTEM THAT REQUIRES SDD TO DIAGNOSE OVERALL FUNCTIONALITY ROBUSTLY TO MAKE SURE CUSTOMER SATISFACTION IS MET VIA RIGHT FIRST TIME DIAGNOSIS. ACTION: SHOULD A CUSTOMER EXPRESS THIS CONCERN, FOLLOW THE DIAGNOSTIC PROCEDURE BELOW."
JTB00446NAS12017-04-05. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. "SITUATION: THE VEHICLE BATTERY MAY BE FLAT OR ONE OF THE FOLLOWING MESSAGES/WARNING LIGHTS MAY BE DISPLAYED ON THE INSTRUMENT CLUSTER. • FAULTY GENERATOR • FAULTY BATTERY MONITORING SYSTEM (BMS) • THE CHARGE WARNING INDICATOR IS ILLUMINATED WHEN THE ENGINE IS RUNNING CAUSE: THE POWER SUPPLY IS A FULLY INTEGRATED SYSTEM THAT REQUIRES SDD TO DIAGNOSE OVERALL FUNCTIONALITY ROBUSTLY TO MAKE SURE CUSTOMER SATISFACTION IS MET VIA RIGHT FIRST TIME DIAGNOSIS. ACTION: SHOULD A CUSTOMER EXPRESS THIS CONCERN, FOLLOW THE DIAGNOSTIC PROCEDURE BELOW."
SSM719742017-03-22. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. "ISSUE: A SIGNIFICANT NUMBER OF BMS (BATTERY MONITORING SYSTEM) MODULES HAVE BEEN REPLACED WHEN DTC B11DB-87 IS LOGGED, WHEN RETURNED TO THE SUPPLIER FOR ANALYSIS MANY ARE DEEMED “NO FAULT FOUND” CAUSE: INCORRECT DIAGNOSIS"
SSM719152017-03-21. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:ALTERNATOR/GENERATOR/REGULATOR. "ISSUE A NUMBER OF ALTERNATORS ARE BEING REPLACED UNDER WARRANTY AND ARE FOUND TO BE FAULTY DUE TO INTERNAL REGULATOR CHIP DAMAGE. CAUSE ALTERNATORS ARE BEING DAMAGED DUE TO CROSS POLARITY WHEN THE VEHICLE IS JUMP STARTED."
SSM-706982016-09-17. Service bulletin. ELECTRICAL SYSTEM:SOFTWARE; ELECTRICAL SYSTEM:12V/24V/48V BATTERY. "ISSUE: A CUSTOMER MAY REPORT THAT THEIR PHONE, DISCONNECTS DURING OR AFTER PHONE CALLS, SHOWS AS PAIRED BUT NOT AVAILABLE, IS NOT SHOWING AS PAIRED BUT IS AVAILABLE, IS DIFFICULT TO PAIR, AUDIO FRAGMENTS WHEN STREAMING MUSIC AND/OR OTHER UNEXPECTED BEHAVIOR. CAUSE: THIS CAN BE A RESULT OF REDUCED PHONE POWER DUE TO THE FOLLOWING:- • BATTERY LIFE SOFTWARE UPDATE ON THE CUSTOMERS DEVICE, • OTHER APPLICATIONS RUNNING IN THE BACKGROUND ON THE CUSTOMERS DEVICE (SUCH AS GAMES, SOCIAL MEDIA APPS, SEARCHING FOR NUMEROUS PAIRED DEVICES). • A BREAK IN THE LINE OF SIGHT FROM THE IAM TO THE CUSTOMER DEVICE (E.G. DEVICE IN POCKET CAUSING ATTENUATION BY THE HUMAN BODY). • ANOMALIES INTRODUCED WITH SOFTWARE UPDATES OF DEVICE THAT MAY REDUCE THE EFFECTIVENESS OF AUTHENTICATION BETWEEN THE CUSTOMER DEVICE AND THE VEHICLE. NOTE: THESE ISSUES ARE WELL DOCUMENTED ON OFFICIAL PHONE MANUFACTURERS “SUPPORT” WEB SITES."
SSM-666372016-09-02. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY. "ISSUE: A CUSTOMER MAY REPORT A CONCERN WITH A FLAT BATTERY OR POOR STARTING; WHEN TESTING THE BATTERY IT IS DETERMINED THAT A CHARGE IS REQUIRED. CAUSE: WHEN CHARGING A BATTERY (BOTH PRIMARY AND SECONDARY) WITH A BMS (BATTERY MONITORING SYSTEM) FITTED, THE EARTH FROM THE CHARGER MUST BE CONNECTED TO A SUITABLE CHASSIS OR ENGINE EARTH (CHECK TOPIX FOR APPROPRIATE LOCATION). THIS ALLOWS THE BMS TO SEE THE CURRENT GOING INTO THE BATTERY. HOWEVER WHEN USING A DIAGNOSTIC CHARGER FROM MIDTRONICS SUCH AS GR1, GRX OR GR8(110 VOLTS) THIS CONNECTION PROCESS CAN CAUSE AN INCORRECT BATTERY ANALYSIS DUE TO THE EXTRA RESISTANCE IN THE WIRING WHEN CONNECTED TO A CHASSIS OR ENGINE EARTH."
SSM-622172013-04-16. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:12V/24V/48V BATTERY:CABLES. JAGUAR: BATTERY CHARGE ILLUMINATES DUE TO AN INCORRECTLY TORQUED OR FITTED BATTERY TERMINAL, WHILE VEHICLE IN SHOP FOR REPAIRS OR DURING PDI PROCESS, CAUSED BATTERY TERMINALS TO BE LOOSE OR ADRIFT. MODELS XK, XJ, XF. NO MODEL YEARS LISTED. *PE
SB-3-2872012-09-12. Service bulletin. ELECTRICAL SYSTEM:12V/24V/48V BATTERY; ELECTRICAL SYSTEM:SOFTWARE. JAGUAR: SEE DOCUMENT SEARCH BUTTON FOR OWNER LETTER. A LIMITED NUMBER OF VEHICLES WITH HAVE SOFTWARE ENHANCEMENT AND BATTERY MONITORING SYSTEM REPLACED AND/OR UPDATED. *PE

The summaries are NHTSA's. Each bulletin's page links NHTSA's copy of the manufacturer's document.