Has anyone successfully stripped one of the linear switches down and repaired them. Mine is working if it's placed exactly in the right spot and pressed inward as though some thing is not making contact without inward pressure.

 

I saw one ( 95 ) at the salvage yard Thursday taking apart for the stereo . PM me if you want the switch .

 

The XJ12 I have access to has one as well. Let me know ASAP if you want it...

 

The XJ12/XJR with the GM transmission have a different switch from the ZF transmission cars.

 

correct.

 

well attempted to pull my failing linear switch apart last night. Couldn't get it fully apart without risk of destruction. What I did find is that adding pressure to the selector rollers made contact and worked. So I have slid some plastic under the selector to apply more pressure to the switches. This is not a long term fix just getting me moving whist waiting for a replacement.

 

Ok further more to this I have left the linear switch in the neutral position (car starts fine) and not re connected to the shifter. So loose in the console. Movement on my heavily worn switch may fail hence leaving it in one position. So far working well. And obviously a temporary fix until a switch arrives.

 

I don't think this is correct.
Up to VIN 737934 the part number is DBC12395
From VIN 737935 the part number is LNA6550BA
Whether the car has a ZF or GM transmission is immaterial
SNG Barratt have confirmed this from the official Jaguar parts list and I have just removed a faulty linear switch labelled DBC12395 from my 95 XJR (VIN 736262) while a replacement purchased from eBay, allegedly from a 1996 XJR and I therefore assume post VIN 737935, is labelled LNA6550BA.
These switches are no longer available as new parts and can only be obtained as secondhand parts from cars which are being broken.
Anybody know where I can a get a functioning DBC12395 from?

 

I'm still on my first cuppa coffee and a bit too bleary eyed too go into a deep rabbit hole, but.......

I think there might be some discrepancies in Jaguar parts listings.

According to the service literature (wiring diagrams, specifically) the normally aspirated 4.0 cars didn't have a linear switch at all but, instead, used a transmission-mounted rotary switch. These cars would have the electronic ZF.

The linear switch is shown for the 3.2 cars (which had the non-electronic ZF) as well as the cars using the 4L80E transmission---the V12s and XJRs.

I had linear switch problems with my XJR. What I'm seeing today in Jaguar's E-catalog doesn't match my recollections from the time.

I'm not trying to assert anything definitive but merely suggesting that a bit of digging might be called for.

Cheers
DD

 

Doug ( as always) is correct. The 4.0 ZF cars have a rotary switch on the transmission side part LNA6201AC. It's listed in the parts book under rotary switch. In the wiring diagram, the 4.0 rotary switch shows 7 wires, the XJR/V12 have 14 wires into the linear switch (DBC12395 ->LNA6550BA).

The 4.0 ZF does have a decoder module on the shifter (also with 14 wires), but that's not the same as the R/V12 version. The 4.0 ZF decoder module is DBC10025.

 

Question: does anyone have this switch working but very noisy? Also, mine is a bit wonky as it doesn't always want to let the lever move out of park on start up. Is it activated by the brake light switch?

Or is this a micro switch of a different PN? Does my profile say I have a '96 X300? (XJ6)