Morning all my jaguar xj super8 has come up with an abs faulty  dsc unavailable cruise unavailable 😬I do not have a code reader I thought that I would just replace the battery as matter of course as the car is new to me and I do not know how old the battery is .I only do short distances and I have left the kids in the car with radio on a few times .I was thinking yaussa battery any good 👀many thanks John 

Hi John, a good battery is essential to the electronic well-being of these cars, so a changing of the battery for what may turn out to be spurious indications on the dash is a good first step, especially when you are unsure of the age of the battery. The Yuasa is a great battery, just be sure to get the version that fits and suits your car. By that I mean ensure the dimensions are correct to fit in the battery tray / box, and that the power (Ah) is of the correct rating.

Once you have the new battery in place, you may find the fault has cleared, but if not, then reading any stored codes should be the next step. A friendly local workshop with the correct tools should be able to help. This may through light on the follow-up steps, perhaps a faulty ABS sensor, but get any codes before changing other parts.

N6 JMX

Thank you I do have a local jaguar independent that I will phone if it doesn't work but I just thought it's Sunday and I could just get a batt and hope it 🙏🤞🍀 sorts it lol I just didn't know which brand to aim for 🤔 cheers John 

13 minutes ago, N6 JMX said:

...just be sure to get the version that fits and suits your car. By that I mean ensure the dimensions are correct to fit in the battery tray / box, and that the power (Ah) is of the correct rating.

N6 JMX

Hi John.

Only thing to add to Jim's excellent advice would be to ensure you get the correct "type". I think yours uses an Absorbent Glass Mat (AGM) rather than a traditional wet cell battery and replacing with the wrong type will almost certainly cause problems. When I got my XF it had a standard wet cell fitted, presumably as they are about half the price of the AGM but often fail within 12 months so if the previous owner was already thinking of selling when it was replaced......

Regards

John

Thank you