Reverse lights permanently on

These lights are all computer controlled ! Several modules involved DIM - dash integrated module , RIM - rear integrated module .They share information on serial data communication network . Class 2 an or GMLAN !
The rear fuse block supplies battery positive voltage through the REVERSE LAMP fuse to the coil and switch terminals of the reverse lamp relay. The DIM sends a power mode message to the RIM indicating that the ignition is in the ON position. When the driver of an automatic transmission equipped vehicle places the gear selector in the REVERSE position, the powertrain control module (PCM) sends a class 2 message to the RIM. The message indicates that the gear selector lever is in the REVERSE position. When the driver places a manual transmission equipped vehicle in reverse the reverse gear position switch mounted on the transmission closes. This provides a ground for the reverse gear position switch signal line, informing the RIM that the transmission is in reverse. For both automatic and manual transmission vehicles the RIM then grounds the control circuit of the reverse lamp relay . This energizes the reverse lamp relay, closing the switch side contacts and providing battery positive voltage to the backup lamp bulbs. The backup lamps are permanently grounded at G402. With both power and ground the backup lamp bulbs illuminate. Once the driver moves the shift lever out of the reverse position a message is send either by class 2 by the PCM or the reverse gear position switch opens causing the RIM to remove the ground from the reverse lamp relay control circuit. This opens the contacts in the relay turning OFF the backup lamps.
This is something best left to the dealer or a ASE certified repair shop . Need a factory or professional grade scan tool to diagnose an repair this . http://www.public.asu.edu/~pheanis/documents/VBI_CAN.pdf

Not sure of the exact location but it IS on the transmission. It is a two-wire connector and has a very high probability of having a black plastic connector socket on the switch itself.

My 2005 S-Type was stuck in reverse but the gear stick was stuck in park. After taking the console apart trying to figure out why the shift lock wouldn't open...three hours later I got under the car and discover that one of the two bolts that held the transmission cable in place was missing...I replaced it and that was all it took.

found this, hope it helps!
X-Type Fuse/Relay identification





Engine compartment fuse box - fuses
Fuse Fuse Rating Colour Circuit

No. Type (amps)

F1 Cartridge 20 Blue Dip beam, High Intensity Discharge (HID) light relay.
F2 Cartridge 50 Red Ignition relay feed.
F3 Cartridge 60 Yellow ABS.
F4 Cartridge 30 Pink Rear window heater/heated mirrors relay.
F5 Cartridge 30 Pink Automatic transmission control module relay.
F6 Cartridge 30 Pink Heater blower relay.
F7 Cartridge 50 Red Power supply to passenger compartment fuse box.
F8 Cartridge 80 Black Blower module.
F9 Cartridge 50 Red Engine management system power relay.
F10 Cartridge 20 Blue Headlight power wash pump relay.
F11 Mini Not used.
F12 Mini Not used.
F13 Mini 30 Green Heated front screen right-hand side.
F14 Mini Not used.
F15 Mini 30 Green Heated front screen left-hand side.
F16 Mini 20 Yellow Left-hand dip beam, day time running lights, autolights.
F17 Mini 20 Yellow Right-hand dip beam, HID lights.
F18 Mini 20 Yellow Throttle motor supply.
F19 Mini 15 Blue Screenwash pump, rain sensing system.
F20 Mini 5 Tan Navigation display.
F21 Mini 15 Blue Side (Parking) lights.
F22 Mini 20 Yellow Accessories relay.
F23 Mini 10 Red Air conditioning compressor clutch.
F24 Mini 15 Blue Door lock power.
F25 Mini 15 Blue Direction indicators (GEM).
F26 Mini 15 Blue Horns.
F27 Mini 10 Red Automatic transmission control module, transit relay.
F28 Mini 15 Blue Ignition switch.
F29 Mini 30 Green Starter motor solenoid.
F30 Mini 30 Green Accessory sockets.
F31 Mini 10 Red Engine management relay coil.
F32 Mini 5 Tan Engine management control.
F33 Not used.
F34 Diode D3 Not used.
F35 Diode D2 Engine management control relay diode.
F36 Mini 10 Red Canister purge valve, airflow meter, throttle motor relay, power wash relay, air conditioning relay.
F37 Mini 15 Blue Engine management system, blower speed controller, road speed sensor (if fitted).
F38 Mini 30 Green Oxygen sensor heaters A.
F39 Mini 5 Tan Variable intake valves.
F40 Mini 15 Blue Automatic transmission control module.
F41 Mini 10 Red Injectors.
F42 Mini 30 Green Oxygen sensor heaters B.


Passenger compartment fuse box - fuses
Fuse Fuse Rating Colour Circuit

No. Type (amps)

F60 Mini 20 Yellow Power windows left-hand.
F61 Mini 20 Yellow Power windows right-hand.
F62 Mini 7.5 Brown Rear fog lights.
F63 Mini 7.5 Brown Right-hand - front side light, side markers, rear tail lights.
F64 Mini 7.5 Brown Left-hand - front side light, side markers, rear tail lights.
F65 Mini Not used.
F66 Mini 30 Green Left-hand power seat switches, heater module, lumbar pump.
F67 Mini 5 Tan Battery back-up sounder, transit relay, HID/dip relay, automatic transmission control module.
F68 Mini 15 Blue Cigar lighter.
F69 Mini 7.5 Brown Telematics display, In-car entertainment head unit, antenna module, navigation module, VICS (Japan), parking aid, amplifier premium 1 system, phone handset, phone power supply module, instrument cluster, PATS module.
F70 Mini 30 Green Right-hand power seat switches, heater module, lumbar pump.
F71 Mini 15 Blue VICS (Japan), telephone transceiver, telephone handset.
F72 Mini 15 Blue Radio head unit, CD player, navigation electronic control module, Jaguar diagnostic connector/OBDII connector.
F73 Mini 15 Blue Sunroof unit/module.
F74 Mini 15 Blue Instrument cluster, Premium ICE amplifier unit.
F75 Mini 7.5 Brown Mirror fold back module, battery back-up sounder, air conditioning ECU.
F76 Mini Not used.
F77 Mini 7.5 Brown Left-hand and right-hand heated seats modules.
F78 Mini 5 Tan Phone power supply.
F79 Mini 10 Red Automatic transmission only: Reverse lights, reverse light switch, reverse park aid, electrochromic mirror, instrument cluster.
F80 Mini 7.5 Brown Park interlock, heater switch, OBDII, blower relay.
F81 Mini 20 Yellow Fuel pump control module.
F82 Mini 10 Red Variable power steering, alternator.
Manual transmission only: Reverse lights, reverse light switch reverse park aid, electrochromic mirror, instrument cluster.
F83 Mini 15 Blue Not used.
F84 Mini 5 Tan Instrument cluster, passenger airbag fascia light, seat weight sensor.
F85 Mini 7.5 Brown Right-hand high beam light.
F86 Mini 7.5 Brown Left-hand high beam light.
F87 Mini 15 Blue Front fog lights, master light switch.
F88 Mini Not used.
F89 Mini Not used.
F90 Mini 7.5 Brown Stop lights, cruise control.
F91 Mini 10 Red Sunroof, electrochromic mirror, power windows, power mirrors.
F92 Mini 10 Red Manual transmission cruise control clutch switch, ignition coils, automatic transmission rotary switch.
F93 Mini 30 Green Windscreen wipers.
F94 Mini 20 Yellow HID module.
F95 Mini 10 Red Airbag restraints module.
F96 Mini 7.5 Brown ABS module.
F97 Mini 7.5 Brown Glove compartment light, instrument cluster lights, licence plate lights.
F98 Mini 10 Red Mirror heaters.
F99 Mini 10 Red Luggage compartment light, footwell lights, puddle lights, vanity mirror lights, interior lights, aircon control unit, roof console unit.__________________
02 X-type 3.0l
04 S-type 3.0l
07 X-type 3.0l

For Automatic transmission problem,Check the list of help links below.click the link below:---- Automatic transmission troubleshooting:----

http://howtobyme.blogspot.com/2011/11/automatic-transmission-will-not-go-into.html

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Automatic transmission shift lever issues?-------

http://technoanswers.blogspot.com/2012/01/automatic-transmission-shift-lever-hard.html

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AUTOMATIC TRANSMISSION FLUID LEVEL? --

http://schematicsdiagram.blogspot.com/2011/07/how-to-check-automatic-transmission.html

--------------

AUTOMATIC TRANSMISSION FLUID AND FILTER?

http://schematicsdiagram.blogspot.com/2011/07/how-to-change-automatic-transmission.html

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Transmission fault light on car dash?

http://schematicsdiagram.blogspot.com/2011/12/transmission-fault-light-on-car-dash.html

--------
Transmission shifting problem?

http://schematicsdiagram.blogspot.com/2012/01/transmission-shifting-problem-on-toyota.html

--------
Transmission Slips out of 2nd gear?

http://repairhelpcenter.blogspot.in/2012/02/transmission-slips-out-of-2nd-gear.html

-----------
OD light flashing and transmission fluid leaking?

http://repairhelpcenter.blogspot.in/2012/02/od-light-flashing-and-transmission.html

----------
Why Transmission fluid leaks near radiator?

http://repairhelpcenter.blogspot.in/2012/02/transmission-fluid-leaks-near-radiator.html

----------
transmission fluid leaking?

http://technoanswers.blogspot.in/2012/02/ford-windstar-transmission-fluid.html

-------------
****** wont go in reverse?

http://technoanswers.blogspot.in/2012/02/dodge-neon-wont-go-in-reverse.html

-------------
Automatic transmission will not go into reverse?

http://technoanswers.blogspot.in/2012/02/dodge-automatic-transmission-will-not.html

----------
Transmission is making buzzing noise?

http://technoanswers.blogspot.in/2012/02/transmission-is-making-buzzing-noise.html

-----------

This will help.

Thanks.

my jaguar 2.5 xtype wont reverse

Sounds like a solenoid or a stuck servo in the transmission. Have it scanned and pressure tested to determine the cause.

The fuse box in the passenger compartment has the fuse you want, it is the F81 Mini 20 Yellow Fuel pump control module other fuses in that compartment are.
F60 Mini 20 Yellow Power windows left-hand.
F61 Mini 20 Yellow Power windows right-hand.
F62 Mini 7.5 Brown Rear fog lights.
F63 Mini 7.5 Brown Right-hand - front side light, side markers, rear lights
F64 Mini 7.5 Brown Left-hand - front side light, side markers, rear tail lights.
F65 Mini Not used.
F66 Mini 30 Green Left-hand power seat switches, heater module, lumbar pump.
F67 Mini 5 Tan Battery back-up sounder, transit relay, HID/dip relay, automatic transmission control module.
F68 Mini 15 Blue Cigar lighter.
F69 Mini 7.5 Brown Telematics display, In-car entertainment head unit, antenna module, navigation module, VICS (Japan), parking aid, amplifier premium 1 system, phone handset, phone power supply module, instrument cluster, PATS module.
F70 Mini 30 Green Right-hand power seat switches, heater module, lumbar pump.
F71 Mini 15 Blue VICS (Japan), telephone transceiver, telephone handset.
F72 Mini 15 Blue Radio head unit, CD player, navigation electronic control module, diagnostic connector/OBDII connector.
F73 Mini 15 Blue Sunroof unit/module.
F74 Mini 15 Blue Instrument cluster, Premium ICE amplifier unit.
F75 Mini 7.5 Brown Mirror fold back module, battery back-up sounder, air conditioning ECU.
F76 Mini Not used.
F77 Mini 7.5 Brown Left-hand and right-hand heated seats modules.
F78 Mini 5 Tan Phone power supply.
F79 Mini 10 Red Automatic transmission only: Reverse lights, reverse light switch, reverse park aid, electrochromic mirror, instrument cluster.
F80 Mini 7.5 Brown Park interlock, heater switch, OBDII, blower relay.
F81 Mini 20 Yellow Fuel pump control module.
F82 Mini 10 Red Variable power steering, alternator.
Manual transmission only: Reverse lights, reverse light switch reverse park aid, electrochromic mirror, instrument cluster.
F83 Mini 15 Blue Not used.
F84 Mini 5 Tan Instrument cluster, passenger airbag fascia light, seat weight sensor.
F85 Mini 7.5 Brown Right-hand high beam light.
F86 Mini 7.5 Brown Left-hand high beam light.
F87 Mini 15 Blue Front Fogs master light switch.
F88 Mini Not used.
F89 Mini Not used.
F90 Mini 7.5 Brown Stop lights, cruise control.
F91 Mini 10 Red Sunroof, electrochromic mirror, power windows, power mirrors.
F92 Mini 10 Red Manual transmission cruise control clutch switch, ignition coils, automatic transmission rotary switch.
F93 Mini 30 Green Windscreen wipers.
F94 Mini 20 Yellow HID module.
F95 Mini 10 Red Airbag restraints module.
F96 Mini 7.5 Brown ABS module.
F97 Mini 7.5 Brown Glove compartment light, instrument cluster lights, licence plate lights.
F98 Mini 10 Red Mirror heaters.
F99 Mini 10 Red Luggage compartment light, footwell lights, puddle lights, vanity mirror lights, interior lights, aircon control unit, roof console unit

On the side of your transmission will be a switch with several wires coming out of it. This is your reverse switch that turns on your reverse lights and most likely needs to be replaced

have you been able to drag it to someplace with a computer diagnostic. That would probebly be a really good start before you start digging into your spendy vechile.
I look forward to your post