I am getting this warning in the dash. WDS said is was the Hall Effect Sensor. Gonna get it up on lift today for other service but thought I would ask if anybody has has this issue. Can it be cleaned or serviced.

I hope I am not looking at a new actuator for a stupid warning light. Park brake still works manually.

 

Be sure it's not low voltage on battery.

 

Checked voltage, 12.31, a little low. Thanks Jagv8.

Anyone know how to read date code on a Jaguar battery? Just curious how old it is.

Have the car on the lift now. If it is the Park Brake Actuator, it will have to wait until I have the money for a Quafe LSD. It a appears to be a PITA to remove.

Woodford

 

Yes, never done it but I believe it is PITA to remove parking brake.

Battery code is 4 digits two above, two below, add top two to get month and bottom

two is year eg mine is 83 and 03 ie Nov.2003 and it is still going!.

Looks like the sensor is integral with the brake therefore you have to remove it to do

any work on it.

I have seen an expolded diagram and the actuator is a complicated little beast.

 

Hi Woodford,

Steve Sparrow (Jags on gas) at the Jag-Lovers X300-358 forum has become a bit of an expert on the X350 EPB (not by choice!), so it would be worth asking him about your fault code. I've got the PARK BRAKE FAULT warning on the dash myself after disconnecting my ECM connector to check for corrosion, and Steve replied to my post at J-L and he mentioned the Hall Effect sensor and PITA seems to be the universal description!

Battery voltage is a definite suspect - my three-month-old battery measured about 12.33V the first time I checked, but I had been running SDD off the battery for about an hour with the ignition on. The next day it measured 12.49V. I charged the battery overnight but still couldn't clear the fault warning, and then tried attaching a battery booster with a good 12.8V while starting the car, and still haven't been able to clear the warning. The code I got was C1802, which indicates that the EPB actuator motor rotated more turns than expected.

Please let me know if you figure yours out before I figure mine out, and I'll try to do the same!

Cheers,

Don

 

I would strongly recommend purchasing a new battery.

 

Does it make any difference whether its dry or wet weather, or car wash time perhaps?


I had a similar issue but only ever when the car had been to the car wash or when it was raining hard.............turned out the cable connections on the rear diff area had worn through, simple fix for me.

 

Thanks, I changed the battery about one year ago (I did not want to get stuck somewhere) but the

original is under my bench and when I charge it, it doesn't need much charging.

German battery (Varta) with a Jaguar sticker on it- amazing!

 

JimC64

The car is parked in my garage most of the time, It sat outside during a heavy rain storm the night prior to the Park Brake Fault indication.

I need to check the plug on the actuator for moisture. It has never triggered this warning before and I have owned the car for 15 months.

I am looking into battery replacement now. Has anyone used an Optima battery in their X350?

Woodford.

 

Woodford - no. I installed a Bosch Battery in my XJ8 - no issues so far (not driving her much hence why I just invested in a C Tek charger)

 

I have not had chance change the battery yet. I am shopping around for the best battery.

The car did something different today when I started. The parking brake would not disengage. I restarted it a couple of times and it finally released. This car sits a lot and and is only run enough to move it out of the way two or three times a week. This could have lead to the battery getting weak.

Don,

Is Jags on Gas's car a XJ8, Your car and mine are both XJRs which have a separate calipers for the park brake. I guess i am questioning what pressing/ pumping the brake pedal has to do with recalibration the park brake. I installed new rear rotors and park brake pads about 4 months ago, so those should not be in question.

Hope to get a new battery by the weekend and will keep working at it.

Woodford

 

Meirion1 and abonano,

From what I've been able to determine, since 1992, some or all of the automotive batteries branded Bosch have been made by Varta, and since 2002, the Varta auto battery division has been owned by Johnson Controls.

Here's a paragraph from one of Johnson Controls' websites:

OFFERINGS
Lead acid batteries sold under private label brands as well as our own VARTA®, Heliar®, LTH® and OPTIMA® brand names. Major OEMs and aftermarket retailers include Daimler, General Motors, BMW, Ford, Toyota, Hyundai, Kia, Volkswagen, SAIC, Bosch, Walmart, Halfords, Interstate Battery System of America, Advance Auto Parts, and AutoZone.

Here's the full web page:

About Us | Johnson Controls Inc.


It's interesting to compare the specs for H8 size batteries from Bosch, Varta, and less exalted brands such as the Duralast Gold from AutoZone.

Cheers,

Don

 

Purchased New Deka Group 49 today and installed it. Battery read 12.6 volts off the shelf. Park Brake Fault still present and now the park brake will not release.

I will check for codes a little later this evening, May have to disconnect the cables to the calipers until I can figure out what is going on.

Woodford.

 

Did you try pushing on the EPB handle? That might cause it to release. Hope it works.

 

I have pushed it, pulled it, held it down and up for several seconds. After restarting the car a few times, it finally released and when it did, I disconnected the cables to the calipers. After driving the car for about 20 minutes, I now also have an Air Suspension Fault. Wow, what is next.

The suspension has not had any issues since I replaced the piston ring. Will see what the WDS has to say.

Woodford

 

Hey there, here's my post from some time ago, looks like a similar issue

https://www.jaguarforums.com/forum/xj-x350-x358-xj6-xj8-xjr-28/cannot-apply-parkbrake-parkbrake-fault-115029/


As you'll see in the post, it never happened when dry, pretty much started to happen all the time when at the car wash, or during heavy rain etc

Turns out the wiring in the rear diff area had chafed through ( seemingly fairly common I believe or at least seems known to a few ) and the water caused it to short out.

Whilst at my Jag Indy they checked it out, found the chafed wire and added insulating tape as a fix. This was now some months ago and I've never had a repeat of this issue.

Might be worth checking out as it should be more or less a free fix

Hope to hear