1988-1989 Digital Dash repair service

This being the premiere Jaguar forum i thought i would ask the entire XJ40 group which, if any, are the premiere repair facilities for having work done on your digital dash? I have heard that the digital clusters can have problems with bad cold solder joints and i want to know who is the best in repairing them. I don’t want to go through a nightmare by sending a unit off to someone who is NOT the best at repairing these clusters. Also, please let me know if there is any other issues with these clusters besides the solder cracking. If i buy one of these cars and the cluster has issues from the start, i would like to have a heads up as to what the probable cause could be. Thank you.

Repairing a cold solder joint is fairly straight forward, the pain is in removing the items. From memory there is a fairly heavy unit that hangs off the dash panel and this stresses the joints. Its been a long time since I had my ‘40’s but there will be information in the archives, accessed via the spy glass top right of the page.

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Kenneth. I had mine done by BBA Reman. Phone 1.866.573 0266.All the info you need is on their site. Excellent job done.

Thank you for your high recommendation. I will definitely call them and have them do any work on a broken digital dash that i may have. Can you explain what was wrong with your unit before you sent it to them? Do you have to worry about the odometer reading staying correct. Any more detailed information would be appreciated.

Kenneth.Mine had nothing working .The milage will be the same if you have it repaired as opposed to exchanged.

Mileage is not stored in the dash module. It is recorded in the car’s computer so even a replacement part would display correct mileage.

Repair is not that difficult, take out the digi-dash, dissemble and find the main power supply to the digi-dash and re soldier, from memory it is the near the largest connector. Mileage is stored in the dash.

Ive gotten conflicting information on this. Some say the mileage is stored in the car’s ECU computer so any dash replacement will not affect mileage. And i’ve gotten other responses that say the large black box on the back of the dash cluster holds the mileage and if you swap a cluster out with another unit, your mileage will be that of the new cluster. Which one is right? ARG!!!

i just checked their website and it only makes known of the 1989 clusters. Do they not do the 1988’s?? Is there a difference between the 1988 and 1989 digital clusters?

I am sure someone on the forum will have a more qualified answer,but in my opinion there was only 1 digital dash in 88/89

What are the major problems with these digital dashes that tell you the soldering joints are bad? From the research i’ve done, it seems that the gauges portion of the dash will just go dark. Or the dash won’t work at all? I don’t own one yet so i’m not sure what are the tell tale signs of one going bad so that i can send it out to BBA Reman.

if you swap the cluster for another it will display the mileage of the new cluster I have been there done that

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and to go even further if you have an 87/88 XJ40 built before June 88 or so the washer jets on the scuttle are different, and some of the circuit boards in the digi dash are slightly different as well but they should be interchangeable.

Not sure what the washer jets on the scuttle are but basically it sounds like the best course of action is to just have your existing unit repaired NOT replaced by another unit and there will be no confusion. Thank you for so much educating me on this topic.

Ken I am not good at electrical problems,I just took it out and put in the mail.The forum always talks of solder joints becoming faulty so when mine gave up after 15 years I sent to the experts.

I appreciate your concern for getting a professional involved, but IMHO learning to re-flow solder joints on an XJ40 is almost a rite of passage on these old heaps!

Tons of connections, relays, fuse boxes digi-dashes et al need the medication sooner or later!!

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