I wonder if anyone can help. I’ve got a ’93 4.0 XJS (VIN xxxx189559) that has always had 2 (non-transponder) keys but only a single remote; something I’ve finally decided to try to address since I don’t like having a single point of failure. This existing remote seems to be after-market since it has no Jaguar branding and the PCB is stamped as being ‘Tech Tronics’ but I wonder if it is simply a replacement fob for the OEM system since the alarm seems to respond with the expected ‘chirps’ and ‘warbles’ that I have seen mentioned online.
With that in mind, if the alarm is OEM, can anyone advise where it would be normally located? Also if it is OEM, is there a simple way of determining whether it would operate at 318mhz, 418mhz or & 433mhz and which of the long list of fobs I might need? At the moment I’m rather lost in a list of DBC100852,
DBC10086, DAC6160, DAC7970, DBC10085, DAC7990, DBC100842.
Again, assuming the alarm is OEM, I’ve seen a couple of processes mentioned to code the replacement/additional fob to the car – one involving a ‘valet switch’ (Is DBC12022 correct?) that my car does not have. Again, is there a way to identify which method will be needed since I have also read that the ’03 XJS might not have the wiring for the valet switch under the centre console lining.
Thank in advance