Symptom Chart: Lumbar

WARNING: This page does not describe the selected car, but rather 12 other vehicles, including the 2015 Jaguar XKR-S, 2015 Jaguar XKR, 2015 Jaguar XK, 2014 Jaguar XKR-S, and 2014 Jaguar XKR. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: The Lumbar/Massage solenoid block is fitted with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure.

SYMPTOM	POSSIBLE CAUSES	ACTION
All seat functions inoperative	Seat system fault Seat switchpack power or ground circuit open circuit, high resistance Seat switchpack internal failure	Refer to the electrical circuit diagrams and check the seat switchpack power or ground circuit for open circuit, high resistance. Repair the wiring harness or install a new seat switchpack as necessary
Lumbar inflate inoperative	Seat switchpack internal failure Lumbar air pump circuit short circuit to ground, short circuit to power, open circuit, high resistance Air hose blocked Air hose leaking Air cell leaking	Refer to the electrical circuit diagrams and check the seat switchpack power or ground circuit for open circuit, high resistance. Repair the wiring harness or install a new seat switchpack as necessary Refer to the electrical circuit diagrams and check the lumbar air pump circuit for short circuit to ground, sport circuit to power, open circuit, high resistance. Repair the wiring harness or install a new lumbar air pump as necessary Remove air hose blockage or repair or replace as necessary
Lumbar deflate inoperative	Seat switchpack internal failure Lumbar solenoid circuit short circuit to ground, short circuit to power, open circuit, high resistance Air hose blocked	Refer to the electrical circuit diagrams and check the seat switchpack power or ground circuit for open circuit, high resistance. Repair the wiring harness or install a new seat switchpack as necessary Refer to the electrical circuit diagrams and check the lumbar solenoid circuit for short circuit to ground, sport circuit to power, open circuit, high resistance. Repair the wiring harness or install a new lumbar solenoid as necessary Remove air hose blockage
Lumbar forward/up/down AND bolster inflate inoperative	Seat switchpack internal failure Lumbar air pump circuit short circuit to ground, short circuit to power, open circuit, high resistance Air hose blocked Air hose leaking Relief valve stuck open	NOTE: Lumbar/massage air pump operation will be inhibited if the motor temperature exceeds 72±4°C (162±7°F). The lumbar/massage air pump will not re-start until 10 minutes after the temperature has decreased below the cut-off temperature. This condition is not a fault. The Lumbar/Massage solenoid block is fitted with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure. Refer to the electrical circuit diagrams and check the seat switchpack power or ground circuit for open circuit, high resistance. Repair the wiring harness or install a new seat switchpack as necessary Refer to the electrical circuit diagrams and check the lumbar air pump circuit for short circuit to ground, sport circuit to power, open circuit, high resistance. Repair the wiring harness or install a new lumbar air pump as necessary Remove air hose blockage or repair or replace as necessary
Lumbar rearward inoperative	Seat switchpack internal failure Lumbar solenoid circuit short circuit to ground, short circuit to power, open circuit, high resistance Air hose blocked Air hose leaking Air cell leaking	NOTE: The Lumbar/Massage solenoid block is fitted with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure. Refer to the electrical circuit diagrams and check the seat switchpack power or ground circuit for open circuit, high resistance. Repair the wiring harness or install a new seat switchpack as necessary Refer to the electrical circuit diagrams and check the lumbar solenoid circuit for short circuit to ground, sport circuit to power, open circuit, high resistance. Repair the wiring harness or install a new lumbar solenoid as necessary Remove air hose blockage or repair or replace as necessary
Lumbar forward inoperative	Seat switchpack internal failure Lumbar solenoid circuit short circuit to ground, short circuit to power, open circuit, high resistance Air hose blocked	NOTE: The Lumbar/Massage solenoid block is fitted with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure. Refer to the electrical circuit diagrams and check the seat switchpack power or ground circuit for open circuit, high resistance. Repair the wiring harness or install a new seat switchpack as necessary Refer to the electrical circuit diagrams and check the lumbar solenoid circuit for short circuit to ground, sport circuit to power, open circuit, high resistance. Repair the wiring harness or install a new lumbar air pump as necessary Remove air hose blockage
Lumbar up inoperative	Seat switchpack internal failure Lumbar solenoid circuit short circuit to ground, short circuit to power, open circuit, high resistance Air hose blocked Air hose leaking Air cell leaking	NOTE: The Lumbar/Massage solenoid block is fitted with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure. Refer to the electrical circuit diagrams and check the seat switchpack power or ground circuit for open circuit, high resistance. Repair the wiring harness or install a new seat switchpack as necessary Refer to the electrical circuit diagrams and check the lumbar solenoid circuit for short circuit to ground, sport circuit to power, open circuit, high resistance. Repair the wiring harness or install a new lumbar solenoid as necessary Remove air hose blockage or repair or replace as necessary
Lumbar down inoperative	Seat switchpack internal failure Lumbar solenoid circuit short circuit to ground, short circuit to power, open circuit, high resistance Air hose blocked Air hose leaking Air cell leaking	NOTE: The Lumbar/Massage solenoid block is fitted with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure. Refer to the electrical circuit diagrams and check the seat switchpack power or ground circuit for open circuit, high resistance. Repair the wiring harness or install a new seat switchpack as necessary Refer to the electrical circuit diagrams and check the lumbar solenoid circuit for short circuit to ground, sport circuit to power, open circuit, high resistance. Repair the wiring harness or install a new lumbar solenoid as necessary Remove air hose blockage or repair or replace as necessary
Bolster inflate inoperative	Seat switchpack internal failure Lumbar air pump circuit short circuit to ground, short circuit to power, open circuit, high resistance Air hoses blocked/leaking Air cells leaking	NOTE: The Lumbar/Massage solenoid block is fitted with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure. Refer to the electrical circuit diagrams and check the seat switchpack power or ground circuit for open circuit, high resistance. Repair the wiring harness or install a new seat switchpack as necessary Refer to the electrical circuit diagrams and check the lumbar air pump circuit for short circuit to ground, sport circuit to power, open circuit, high resistance. Repair the wiring harness or install a new lumbar air pump as necessary Remove air hose blockage or repair or replace as necessary
Bolster deflate inoperative	Seat switchpack internal failure Bolster solenoid circuit short circuit to ground, short circuit to power, open circuit, high resistance Air hoses blocked	NOTE: The Lumbar/Massage solenoid block is fitted with an air exhaust valve that is designed to expel air under operating conditions. This is not an air leak and does not represent a solenoid block failure. Refer to the electrical circuit diagrams and check the seat switchpack power or ground circuit for open circuit, high resistance. Repair the wiring harness or install a new seat switchpack as necessary Refer to the electrical circuit diagrams and check the lumbar solenoid circuit for short circuit to ground, sport circuit to power, open circuit, high resistance. Repair the wiring harness or install a new lumbar solenoid as necessary Remove air hose blockage