Battery replacement inquiry.
#1
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Old man winter has finally sat down here in lovely coastal NC. Now my battery is too drained to crank after 2-3 days of sitting dormant in freezing temps(FH).
My question is, as I install the new battery if I run one of those battery boosters that connect via the cigar lighter. Will that suffice to keep me from having to re-program everything, as well as the car's ECUs from re-learning !?
I will link the booster I plan to use.
My question is, as I install the new battery if I run one of those battery boosters that connect via the cigar lighter. Will that suffice to keep me from having to re-program everything, as well as the car's ECUs from re-learning !?
I will link the booster I plan to use.
Last edited by King Charles; 01-26-2016 at 04:46 AM.
#2
#3
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Yeah my basic knowledge of circuits told me as such, but after all it is a Jag, the host of many electrical eccentricities, so it was worth the proverbial shot lol.
Last edited by King Charles; 01-26-2016 at 05:31 AM.
#4
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On a Jaguar, as well as most cars theses days, the cigarette lighter circuit is powered through a relay. If that relay is pulled in when the power supply is connected tot he lighter, then it will continue to hold the circuit on until the voltage drops too low to hold the relay in.
There are other places to inject power to the bus to hold the controller memories, like the OBD plug. I think this has a risk of, at best, blowing a fuse, or worse damaging the wiring if a sudden high load is inadvertently connected, such as what might happen if the security alarm was set off and the lights began flashing.
There are other places to inject power to the bus to hold the controller memories, like the OBD plug. I think this has a risk of, at best, blowing a fuse, or worse damaging the wiring if a sudden high load is inadvertently connected, such as what might happen if the security alarm was set off and the lights began flashing.
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King Charles (01-26-2016)
#6
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Update : I did the booster in the accessory/cigar lighter outlet & had every thing set up for the battery switch so it was literally under 5 minutes to install. She fired right up, threw me a ghost "gear box fault" message that went away the next start (also 1st time I've ever seen that warning w/ this car) yet to resurface. All my settings were normal, no reprogramming necessary.
+1 for rapid battery replacement w/ booster !
+1 for rapid battery replacement w/ booster !
Last edited by King Charles; 01-26-2016 at 12:13 PM.
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#8
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I had all the tools, the new batt. setting inches away(on a towel draped over trunk lip) as if it were open heart surgery to ensure the little booster kept the circuit, while I transplanted w/ lightening speed lol.
#9
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King Charles (01-26-2016)
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