could this be the cause of the xk battery issues
#21
"The battery must be disconnected and removed from the vehicle before charging. Failure to do so could result in damage to the vehicle's electrical system."
So you are not following their instructions either
It also say in that section:
"Always follow the instructions supplied with the battery charger. Failure to do so may result in damage to the battery."
So I guess we are all OK then as we are following their recommendations for connecting the leads
#22
I prefer to follow the advice in the Owner's Manual:
Jaguar engineered our cars with remote battery terminals for a reason - safety - because hydrogen gas is colorless, odorless, and highly explosive. If you connect your charger directly to the battery terminals you risk causing an explosion. Hydrogen gas can accumulate in the battery compartment even though it is vented. That's the reason for the remote battery terminals - to minimize the risk of explosion. If you use the remote terminals a spark can't ignite any hydrogen gas that may be in the battery compartment.
I don't want to hijack this thread. If you're interested in learning more about the remote battery terminals and battery safety, see these old threads:
https://www.jaguarforums.com/forum/x...lay-ups-73471/ and my posts ##17, 19, 21 and
https://www.jaguarforums.com/forum/x...storage-85201/ and my posts ##15 and 17
Stuart
"Do not connect a booster cable to the battery terminals of this vehicle. Always connect to the recommended remote terminals."
"Do not connect any 12 volt equipment directly to the battery terminals. Doing so may cause a spark, which can result in an explosion."
I realize that others have connected their chargers directly to the battery terminals without any reported adverse effects. I'd rather be safe than sorry."Do not connect any 12 volt equipment directly to the battery terminals. Doing so may cause a spark, which can result in an explosion."
Jaguar engineered our cars with remote battery terminals for a reason - safety - because hydrogen gas is colorless, odorless, and highly explosive. If you connect your charger directly to the battery terminals you risk causing an explosion. Hydrogen gas can accumulate in the battery compartment even though it is vented. That's the reason for the remote battery terminals - to minimize the risk of explosion. If you use the remote terminals a spark can't ignite any hydrogen gas that may be in the battery compartment.
I don't want to hijack this thread. If you're interested in learning more about the remote battery terminals and battery safety, see these old threads:
https://www.jaguarforums.com/forum/x...lay-ups-73471/ and my posts ##17, 19, 21 and
https://www.jaguarforums.com/forum/x...storage-85201/ and my posts ##15 and 17
Stuart
#23
"AGM batteries are sealed, but they still off-gas."
'Even though your batteries are normally sealed, they actually do have a venting system integrated into the case top. In the event of an overcharge condition, it is possible for excess pressure to build up inside your battery. Your new batteries are equipped with check valves that are engineered to open at between 2-3 PSI depending upon the specific brand. What will be expelled is hydrogen gas, and you want to vent that as it is quite explosive.
It appears that so-called "sealed" batteries aren't really completely sealed.
#24
I hate to mention it but the 2009 owners manual also says under Battery Charging:
"The battery must be disconnected and removed from the vehicle before charging. Failure to do so could result in damage to the vehicle's electrical system."
So you are not following their instructions either
It also say in that section:
"Always follow the instructions supplied with the battery charger. Failure to do so may result in damage to the battery."
So I guess we are all OK then as we are following their recommendations for connecting the leads
"The battery must be disconnected and removed from the vehicle before charging. Failure to do so could result in damage to the vehicle's electrical system."
So you are not following their instructions either
It also say in that section:
"Always follow the instructions supplied with the battery charger. Failure to do so may result in damage to the battery."
So I guess we are all OK then as we are following their recommendations for connecting the leads
Note that the Handbook is divided into chapters and sections. Under the Vehicle Battery Chapter the section headings are in BOLD CAPS, as follows:
VEHICLE BATTERY
BATTERY WARNING SYMBOLS
BATTERY CARE
USING BOOSTER CABLES
CHARGING THE VEHICLE BATTERY
CHANGING THE VEHICLE BATTERY
EFFECTS OF BATTERY DISCONNECTION
Your quotes are from page 189 of the 2009 Owner's Handbook (USA) under the section titled "CHARGING THE VEHICLE BATTERY". Charging the battery is different from maintaining the battery. Jaguar recommends removing the battery before charging it because a quick charge could damage electrical system components and cause the electrolyte to boil and produce hydrogen gas, which is an explosion hazard in the confines of the battery compartment.
I am referring to pages 187 and 188 of the Handbook under the section titled "USING BOOSTER CABLES". Removal of the battery is not required when using booster cables, and Jaguar recommends connecting to the remote battery terminals. Yes, we are charging the battery, but is is not a quick charge; our smartchargers apply a trickle charge.
Here's the link to that Handbook. JJM 10 02 30 901 - XK - OWNER’S HANDBOOK | TOPIx On the left side of the page click on Vehicle Battery. That will take you to page 187. Read those two sections as being separate and you will see the differences between using booster cables (for a weak battery) and charging the battery (for a dead battery). Unfortunately, the Handbook is ambiguous and could have been written more clearly.
Notwithstanding the above, as I said previously - your car, your choice.
#25
If you insist on following the manual to the letter then you should disconnect the battery as there is no mention of any other sort of 'booster' in that section. I think we are all sensible though and realise that isn't necessary.
The workshop manual notes "Although also fitted to coupe vehicles, the remote jump start terminal has been specifically designed to allow a convertible vehicle to be jump started if a drained battery is experienced when the top is in the stowed condition"
Although it is handier to use for those of us with coupes that kind of implies they wouldn't have bothered fitting it if it wasn't for the convertible.
Lets therefore have a look at the XF owners manual:
"1. Connect one end of the positive booster cable to the positive terminal on the donor vehicle's battery.
2. Connect the other end of the positive booster cable to the positive terminal on the disabled vehicle's battery.
3. Connect one end of the negative booster cable to the earth point of the donor vehicle that is recommended for jump starting by
the manufacturer.
4. Connect the other end of the negative booster cable to a suitable earth point on the disabled vehicle. The earth point should be at least 0.5 metres (20 inches) away from the battery and as far as possible from any fuel or brake pipes."
That has been standard practice with jump leads since forever but for some reason no one will die and there won't be an explosion on those cars when you attach the positive booster cable directly to the battery but there will be on an XK?
The XF manual also mentions not connecting 12 volt equipment directly to the battery and like the XK manual actually gives an example of what they mean:
"Do not connect any 12 volt equipment (e.g. a 12 volt inspection lamp), directly to the battery terminals."
An inspection lamp without a switch is likely to cause a spark as you connect it, an unplugged remote battery charger lead is not.
So I still think that if you have a 5.0L car with the BMS the earth lead should ideally be connected remotely so it doesn't get confused but there is no reason why you shouldn't attach the positive cable directly to the battery which is what the instructions that come with the Jaguar supplied charger say.
#26
Yup, I appreciate that and, as shown in the picture in the manual, that booster section is very clearly dedicated to attaching a donor battery to the car which is not what we are talking about. It even explains that in that section. You seem to be happy to interpret it differently but then are unwavering about not attaching any lead directly to the battery. The 2014 UK manual calls them jump leads in that section, not booster cables, so there should be no confusion in terminology.
If you insist on following the manual to the letter then you should disconnect the battery as there is no mention of any other sort of 'booster' in that section. I think we are all sensible though and realise that isn't necessary.
The workshop manual notes "Although also fitted to coupe vehicles, the remote jump start terminal has been specifically designed to allow a convertible vehicle to be jump started if a drained battery is experienced when the top is in the stowed condition"
Although it is handier to use for those of us with coupes that kind of implies they wouldn't have bothered fitting it if it wasn't for the convertible.
Lets therefore have a look at the XF owners manual:
"1. Connect one end of the positive booster cable to the positive terminal on the donor vehicle's battery.
2. Connect the other end of the positive booster cable to the positive terminal on the disabled vehicle's battery.
3. Connect one end of the negative booster cable to the earth point of the donor vehicle that is recommended for jump starting by
the manufacturer.
4. Connect the other end of the negative booster cable to a suitable earth point on the disabled vehicle. The earth point should be at least 0.5 metres (20 inches) away from the battery and as far as possible from any fuel or brake pipes."
That has been standard practice with jump leads since forever but for some reason no one will die and there won't be an explosion on those cars when you attach the positive booster cable directly to the battery but there will be on an XK?
The XF manual also mentions not connecting 12 volt equipment directly to the battery and like the XK manual actually gives an example of what they mean:
"Do not connect any 12 volt equipment (e.g. a 12 volt inspection lamp), directly to the battery terminals."
An inspection lamp without a switch is likely to cause a spark as you connect it, an unplugged remote battery charger lead is not.
So I still think that if you have a 5.0L car with the BMS the earth lead should ideally be connected remotely so it doesn't get confused but there is no reason why you shouldn't attach the positive cable directly to the battery which is what the instructions that come with the Jaguar supplied charger say.
If you insist on following the manual to the letter then you should disconnect the battery as there is no mention of any other sort of 'booster' in that section. I think we are all sensible though and realise that isn't necessary.
The workshop manual notes "Although also fitted to coupe vehicles, the remote jump start terminal has been specifically designed to allow a convertible vehicle to be jump started if a drained battery is experienced when the top is in the stowed condition"
Although it is handier to use for those of us with coupes that kind of implies they wouldn't have bothered fitting it if it wasn't for the convertible.
Lets therefore have a look at the XF owners manual:
"1. Connect one end of the positive booster cable to the positive terminal on the donor vehicle's battery.
2. Connect the other end of the positive booster cable to the positive terminal on the disabled vehicle's battery.
3. Connect one end of the negative booster cable to the earth point of the donor vehicle that is recommended for jump starting by
the manufacturer.
4. Connect the other end of the negative booster cable to a suitable earth point on the disabled vehicle. The earth point should be at least 0.5 metres (20 inches) away from the battery and as far as possible from any fuel or brake pipes."
That has been standard practice with jump leads since forever but for some reason no one will die and there won't be an explosion on those cars when you attach the positive booster cable directly to the battery but there will be on an XK?
The XF manual also mentions not connecting 12 volt equipment directly to the battery and like the XK manual actually gives an example of what they mean:
"Do not connect any 12 volt equipment (e.g. a 12 volt inspection lamp), directly to the battery terminals."
An inspection lamp without a switch is likely to cause a spark as you connect it, an unplugged remote battery charger lead is not.
So I still think that if you have a 5.0L car with the BMS the earth lead should ideally be connected remotely so it doesn't get confused but there is no reason why you shouldn't attach the positive cable directly to the battery which is what the instructions that come with the Jaguar supplied charger say.
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