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Prestige Auto Works
You need to have your wheel bearing checked. Also make sure the wheel balance is correct, which should have been done with any tire installation.
This one code means that your engine cylinder#5 has a misfire. There are multiple causes for this and it's recommend to schedule an appointment for diagnostics asap. Misfires can cause damage to the catalytic converter and add a great expense to your repairs if neglected.
You can get a lock cylinder/handle with the key from Honda and replace it. You don't have to replace the whole glove box.
You would be the best judge if it's something you would like to repair on your own or not. It may be very awkward to replace p/s lines if the are under the vehicle. I would recommend a professional inspection at least. P/S fluid loss like that could quickly damaged the pump.
You may check that the alternator is installed properly and that nothing was left disconnected during the repair. Sometimes when alternator go bad, that battery may also require replacement. If the battery is bad, you could have multiple complications.
The A/C lines should be clean and dry. Freon is a gas and you may not be able to tell where it leaks out. If the system does not hold the proper level of Freon then it will blow warm. Also there may be a problem on one or more other components in the A/C system causing it to only blow warm air. I would recommend professional diagnostics to determine why it only blows warm air. There are many A/C components and guessing could become very expensive.
If you didn't have this problem before you got new brakes, then you should check with the installer to make sure that everything is properly assembled. If you did have this problem before you got new brakes, then it would be a good idea to check control arm bushings and the suspension. A jerk could be caused by an engine performance issue, but since you mentioned a clank as well I would assume it's more physical in nature.
Does it also overheat if you are sitting at a stop light or going through a drive-through? Make sure it has the proper coolant mixture at the correct level. Are the fans working properly? The check engine light may be able to indicate if there is a fault in the cooling system, if it's on. It would advise you to see a mechanic that is familiar with Jaguars and specializes in diagnostics. You don't want to overheat your engine and cause further damage.
There isn't a dip stick on these vehicles. They are filled with "lifetime" fluid, but typically it does need to be replaced every 100,000 miles at least.
It sounds like you have some nice friends, trying to be helpful. On these newer cars, so much is controlled by computers. It sounds like you may have electrical wire damage as well as computer communication issues. I would recommend bringing it to a qualified shop (such as ours) and dropping it off for diagnostics. Besides repairs you may need programing (which we can do). You need to have lots of patience with a big problem like this, especially when you've had someone try to bypass the problem.