Confusion
Passenger seat module failed. Bought used one from Jagbits. Installed.
Now passenger seat goes forward and backward but not up down.
Wife insists it used to go up down.
Current Jag tech (good guy) says this module has no up down motor.
So what's up?
1) wife is wrong, never went up down
2) original module had up down motor and replacement does not; ie I bought the wrong one
3) tech is wrong
4) your clever idea here?

 

Never seen the XK passenger seat with a rise/fall function!!!!!!!!!!!!
(not on NAS cars anyway, maybe ROW?)

 

interesting, thanks
original owner long gone
wife says used to go up down
current tech says no up down motor
called dealer with VIN, they say car had an up down passenger motor
I think I am losing my mind
was built for Canada market

 

Oddly, mine does. Perhaps it's an option, or perhaps Jaguar fitted a NAS driver's seat by mistake

 

oh my now we have for this Canada market car
wife says seat used to go up down
current tech says no up down passenger motor
called dealer with VIN, they say car had an up down passenger motor
motorcarman. never seen one
michaelh my car has one
maybe someone snuck in and stole my passenger up down motor
or
maybe my wife is nuts (I do think that from time to time)

by the way what is a ROW car?

 

ROW= Rest Of World.

You can swop the passenger seat module with the driver's side to check if the (alleged) functionality is restored...

 

true, but if passenger has no motor...

 

..then it was all a dream...

Seriously, the only obvious difference in JTIS is the presence or otherwise of the raise/lower motor in the seat. It appears that the seat switchpack is the same.

 

Standard procedure is to swap driver and passenger control module (the box under the front edge of the seat cushion). If the driver modules works, then it will activate whatever functions on the passenger side. You are correct in your assessment that seat control failures generally reside in the control modules, but sometimes the side buttons fail, too. You will have to do a separate search for this as these side boards are generally fixable as well. I assume motors and harnesses can occasionally fail as well, but that is rarely reported.

Separately, it is true that in certain markets, a simpler/cheaper passenger seat was installed. It provided no elevation change feature. I assume the side control switches would then be different/simpler as well. I am not sure the control modules were different as they are basically circuit boards and do not host anything mechanical in nature (motors, rods, air pump etc.). I believe the only difference between driver and passenger control module is that the driver side hosts the memory function. There is generally a sticker on the box to that effect.

PS: by up/down I assume you mean control of the seat bottom cushion. The seat back should definitely recline forward and back on demand.

PPS: The general approach is to repair the original modules (as opposed to replace them) because sometimes the replacement part does not match what the CPU expects (from a data bus perspective) and some functions do not work (like the heater). New parts have to be "programmed" to then work right.

 

Before doing a bunch of swapping. Does your drivers seat go up and down? If so then the passenger should too. If it doesn't swapping modules won't make the passenger go up and down.

 

drivers goes up down ok
so then now we have
===============
wife says seat used to go up down
current tech says no up down passenger motor
called dealer with VIN, they say car had an up down passenger motor
motorcarman. never seen one
michaelh my car has one
avern1 if drivers up down, passenger should go up down

so new question then
to do all motions how many motors will be under the seat?

 

Well,

This is an interesting one. I presume my 99MY XK8 LHD in the Kingdom of Bahrain is a ROW car and it has a passenger seat bottom that does go up/down.

Here's a pic of the bottom of the driver's seat's mechanisms, but I'm not sure which motor/worm gears powers this function as I wasn't looking closely for this at that time. Maybe someone else can chime in on what to look for. DIY Getting the passenger seat out of the car was relatively straight forward, but heavy. If you need help on that DIY job, let us know. Sorry never got a pic of the bottom of the passenger seat.

 

I only see one motor. Does one motor do it all? All the motions?

can ignore, sorry
in old parts list I see Motor fore aft and Motor height so 2 motors

 

I don't think the early XK (first MY 1997 as the question was about) has Rise and Fall feature.

I don't have X100 in the shop to look at so I can't be sure.

Does the RH seat switch have the movement to RISE/FALL?

 

97 does have the switch that does for aft up down, fore aft work, life does not
found in 97 workshop manual that passenger rise and fall was optional in some markets
so seems clear there are some of these with no passenger lift
but still this conflict
wife says did go up down
dealer with ViN said this car has passenger seat lift
but tech says no up down motor
will stop now till tech and I look at the seat
will return with answer to this query

 

My 1997 coupe was made for the Canadian market and has no up / down feature for the passenger seat.

 

well then
another Canadian on the side of no passenger lift motor and that my wife is nuts
would now be fun to call dealer with last 8 digits of your global vin and see if your car lists as having passenger lift motor
I could do that if you are willing to share last 8 digits of global vin

 

Mine is 00002693. At least you have a decent dealer. The one that did the work on mine for the last 20+ years for the previous owner won't give me the time of day.
The car was ordered by the previous owner and delivered to him on Oct 15, 1996. On a side note, if your old lady is like mine.....

 

Ok will call 'em up
On the dealer issue, I went to the dealer for repairs service for 20 years. But I don't anymore. Why not?
1) I found that the new "kids" working in the shop know nothing about 1997 cars
2) The dealer said he does not have computer software to service cars before 2000.
But is Ok
I found a little shop to do the work who charges lots less and is actually fun to work with.

 

FWIW, my '97 does not have passenger up/down. I had the switch apart to fix another issue, and the up/down portion of that switch is different from the driver's side. PS has the up/down motion blocked.