I need help on my 2002 Jaguar x type. Last week when i was driving it, the right turn signal started to flash really fast but the left turn signal is working fine. Today, both signal turns and the high beam are not working anymore. I searched in the web and it says possible the GEM module. I saw Thermo's response last 2010 to mmolaik (which we have the same exact problem). I tried looking for any burnt wire going to the headlight and causing the fuse 25 to blow up but i could not find it. I tried to replace fuse 25 but it blew up again. Could it be the GEM nodule? Would the fuse 25 blow if it is the module?
Thanks and i appreciate any help you could give me!

 

LarMan, try this, access the fuse box inside the passenger area and remove relays R15 (high beam/fog light relay) and R21 (battery saver relay). Now, replace fuse F25 and see if the fuse blows immediately. If yes, then odds are you are looking at a bad GEM module. Assuming that the fuse did not blow, turn the ignition key to the RUN position (do not start the car). Did the fuse blow now? If it did, let me know.

Assuming fuse F25 is still not blown and the key is in the RUN position, replace relay R15. Did the fuse blow now? If yes, you have a problem with either the relay or the wiring going to the fog lights. If the fuse blew, remove relay R15, put in a good fuse into F25 and then take the relay R21 and put it in the R15 location. Did the fuse blow again? If no, then odds are you have a bad relay and you need to replace the relay. If the fuse blew again, let me know.

If you can install a fuse and it not blow and can install relay R15, then let me know and I will give you some more steps to take to figure out where the problem lies.

 

Thermo, I appreciate your response. Here's what I did prior to your recommendations; After spending a few hours looking for any burnt wires at various places possible, I just gave up and called it a day since it has been very frigid here in Denver. I decided to buy new sets of 15A fuses and maybe, just maybe, that the reserve ones i have are defectives (i think they are the original back up fuse that comes with the car). Lo and behold, it worked! All the turn signals, high beam and hazard light are all working. I hope it is really just a bad fuse, and if it goes out again, i will follow what you've said. Thanks again!

 

larMan, keep an eye on things. If you start having issues again, let me know. Just to ask a silly question, but did the problems start after it raining or the car experiencing a lot of water (car wash, slushy roads, rain, etc). What you are experiencing is somewhat indicative of water getting into a computer module. Granted, the GEM module is inside the passenger compartment. But, if you happen to have walked through some salty slush/snow and then happen to kick it up under the dash (I would call this really bad luck), this could possibly explain things.

 

Hi Guys - I have exactly the same problem (2005 car). No indicators, no hazzards and no high beam. Fog lights ok.
Can't find a blow fuse - but will now have another look.
Thermo (a star on this forum) mentioned removing R15 from inside the car, but my fog/high beam relay is located under the bonnet. Might this mean F25 is not the fuse I should be looking at on a 2005 car?

 

Paul, F25 on your year car is not the same as it is on Lar's car. There was a wiring modification done in early 2004 by Jaguar and they renumbered all the relays and fuses. So, anything that you read about wiring, you need to pay special attention to the year vehicle they are referring to. If you are still having issues, let me know and I will give you the fuses/relays that you are looking for.

 

Hi Chris, I found 2005 diagram and the GEM feed led me to F35 in car which had blown. Replaced it and tried indicators first -ok, main beam seems fine also. Will have to see how it goes. All the best Paul

 

Wiring diagrams before and after the 2004 change are here: https://www.jaguarforums.com/forum/x...4-25-a-152076/

 

Thermo, So far so good. As per your question, it was snowing for a few days when i had that problem but I don not recall having any passengers that week. Anyway, im not familiar with the GEM so I will try and look for it at the passenger side. Any hints how to find it? Thanks again!

 

LarMan: Sit in the US passenger seat, stretch your legs forward under the dash and kick upward with your right foot. Don't do this for real, because you might kick the GEM, pictured below.

What Thermo insightfully suggests is perhaps your GEM was accidently kicked with a wet or salty boot.

Here's a thread describing how someone dislodge a GEM connector with an accidental kick: https://www.jaguarforums.com/forum/x...l-trunk-68245/

Given your intermittent symptoms, Thermo's suggest is to make sure your GEM has tight, clean electrical connectors.

FYI, while you're looking under the dash at the GEM, you'll see a metal box directly behind it which is the ECM. Open the hood to see the ECM's electrical connector on the engine-side of the firewall, by the hinge, behind the strut tower.

Good luck.

 

I need help on my 2007 Jaguar x type. Yesterday when I was driving it, the turn signals and the high beam were not working anymore. I searched in the web and it says possible the GEM module. I can't find a fuse for the turn signals - as my first language is German it is rather hard for me to find out which fuse could be the bad guy :-)
I hope that you can help me!

 

Katharina, fuse F35 in the passenger compartment fuse box. Second check. depress the "HAZARD" switch (red triangle switch). Do your hazard lights come on? If yes, then fuse F35 is good. If not, then fuse F35 is most likely bad. If the hazards did come on, then your problem is the ground wire for your steering column is bad. This feeds all the switches that you are having issues with.

 

WOW - thanks a lot! you are my hero :-) It really was just the tiny fuse F35. In the German description there is no fuse for the turn signal. No one here in Lower Austria could help us (seems that the so called experts in the garages for Jaguar are no experts at all!)

 

Hi. I should have posted where I found the faults with both indicators and full beam. Both problems were the result of wiring faults within the headlight assembly. I rewired with a wire direct to the back of the relevant bulb. Good Luck.

 

Dear LarMan, good morning, it's been a long time since this problem happened to you and now it's happened to me too, do you happen to remember the location of the fuse you replaced?

 

pcouto, because you are in Brazil and have a left hand drive vehicle, the GEM module is going to be tucked under the dash in the foot well area there. As for the fuse, it is going to be in the fuse box to the left of the steering wheel.

 

Hello there g’day. I was wondering if anyone would happen to still be active on this forum and might be able to help with the same issue i’ve got with a 2008 X type? Right hand drive. I just bought the car today and it’s the first jaguar i’ve owned. The indicators worked when first left the driveway then they stopped. Both indicators, hazards and high beams aren’t working. i’m not to knowledgeable with the location of the fuse boxes or issues with these car so if anyone might be able to help or have a bit of insight that would be fab. Thanks all

 

shazeel, first off, welcome to the Forums. Lots of good info here. First thing I would tell you to do is to go back out to the X-type main page and look at the top of the listings under the "Stickies" (stuff we have made remain at the top of the list). One of those will talk about "JTIS". Download that file. This is going to have the electrical diagrams for your car. One word of caution to prevent you from pulling out your hair. The X-TYpe has gone through 3 different wiring harnesses. There is the pre-early 04 harness, there is the post early 04 harness, and then there were a few tweaks added in 2007. So, the post 04 and the 2007 harnesses are pretty close to each other. So, use them interchangeably with the knowledge that it may not be 100% correct.

As for fuse boxes, your car has 2 of them. There is one in the engine bay. If you open the hood/bonnet and stick out your right hand, the fuse box will be about under it. The second fuse box is under the steering column, between the steering column and the outside of the car on the driver's side.

As for your issue. I would start with checking your foot area under the fuse box. The GEM module (Generic Electronics Module) controls the lights that you are talking about and the car is known for getting a windshield leak and having the GEM module get flooded out. The GEM module is located above (?) the GEM Module (atleast right in that same general area). If this is the case, I would be somewhat cautious in what module you get. If you look on the GEM module, you are going to see a number similar to "4X43-abcde-AA". The 4X43 says that you have a revamped car and that you have gotten the electrical improvements. The AA is the version of the GEM module. You want something as close to what your module says on it. The abcde is going to be 5 (possibly 6) characters (letters or numbers). That is the true part number. I say this because it may be possible to get your hands on say a Ford Mondeo and if that GEM has the same part number, it should work in your car.

If you can wait 3 weeks, I will send you the 2007 wiring diagram to you. You just need to get a few more posts under your belt to be able to send me a private message with your e-mail in it. But, based on what you are describing, sounds like the GEM module died. Otherwise, it is looking like a mouse got hungry and ate some wiring. Yes, the wiring insulation is vegetable based and the critters love the stuff.

 

Dear Thermo. Thank you so much for your detailed reply and time I really appreciate it.

I have managed to find the GEM module under the drivers footwell and both of the fuse boxes, although the fuse box placement inside the vehicle was under the glove box on the passenger side so unsure if they are a bit different being a AJ20 2.1L fwd model.

I have managed to find a few GEM modules available close to me from scrapyard vehicles and quite reasonably priced at $50, i’ll be having a look tomorrow to see if the part numbers will match up to any of them.

Have had a look around for any wiring that might have been chewed or disconnected and everything did look to be in order.

When i’d first gotten the car and taken it for the first drive the right hand side indicators did work but when tried turning on the left side ones they both went out along with the hazards and high beams. So had been hoping/thinking that it may have been a blow fuse or something of that sort. I looked back to the previous posts on this tread and had pulled out all the fuses mentioned to check them and all looked to be in order.

I’ll await your response on what you’d recommend to do before making any haste decisions and buying a replacement GEM unit for it.

Again thank you very much for your time and response it has helped greatly.

 

I will offer one more hail mary try, but then we are pretty much looking at having to replace the GEM module. What I want you to do is disconnect the negative battery cable, wait about 1 minute, then reconnect it. This is going to do a hard reboot of the car. With the GEM module, sometimes this works. This will force you to reset the auto up/down of the windows, but that is as easy as starting with the window up (doesn't matter which one), press and hold the control switch in the down position and hold it there until it reaches full down. CONTINUE to HOLD IT DOWN for another 3-5 seconds (may hear a faint click, can release after that click). Now, open the same window, again, once you hit the top, CONTINUE TO HOLD until you hear that click again. Push the down button and it should go all the way down. Press up, it should go all the way up. Repeat for the other 3 windows.