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How do you jump start the hybrid?

9 messages,  Last post on Apr 15, 2009 at 1:49 PM

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#1 of 9 How do you jump start the hybrid? by pego99 Jul 18, 2008 (9:35 am)
Let's say my 12v battery is dead and the high voltage battery is not dead say fully charged. Does this mean that the car cannot "start". Or can it start on the high voltage battery? Perhaps the engine ignition needs the 12 volts etc. Can someone explain how this all works? Thanks. Replies to this message: stevedebi (Jul 18, 2008 3:39 pm) thehybridguy (Nov 02, 2008 5:52 am)
#2 of 9 Re: How do you jump start the hybrid? [pego99] by stevedebi Jul 18, 2008 (3:39 pm)
Replying to: pego99 (Jul 18, 2008 9:35 am) "Let's say my 12v battery is dead and the high voltage battery is not dead say fully charged. Does this mean that the car cannot "start". Or can it start on the high voltage battery? Perhaps the engine ignition needs the 12 volts etc. Can someone explain how this all works? Thanks. "   It should be in the owner's manual.   The 12v battery powers up the electronics so that the hybrid battery can spin the engine to start it.   Jump starting is simply a matter of connecting jumper cables to the terminals, just like a regular car. Some hybrids have jump terminals in the front, with the 12v battery itself somewhere in the back of the vehicles. Other cars (like my FEH) have the battery under the hood.
#3 of 9 by pego99 Jul 18, 2008 (5:00 pm)
I know where the jumper connection is under the hood from the manual but it is not clear what happens since the engine does not run when in park. So the car is in park and I connect the jumper cable and what? How do I know when I can disconnect the cables shift to drive and go?
#4 of 9 Be careful by researchqueen Jul 23, 2008 (11:01 am)
Be very careful when jumping your 12v battery. Two of the terminals are not in the usual places. My battery died before I could drive my new hybrid off the lot, and the techs showed me how to jump it. Definitely read your owners manual carefully, because it can cause a real problem if you don't.   If your car is new and the battery dies more than once, return it to the dealer... they replaced my battery, because it's a known issue that the 12v batteries tend to die if they sit for too long. Apparently, all the technology in the car is a drain on the 12v even when the car is off. As a result, the dealers' cars die pretty often and they have portable jumping units they carry around... I bought one on Amazon to carry in my trunk, just in case. But since they've replaced the 12v, it's been fine.
#5 of 9 Re: How do you jump start the hybrid? [pego99] by thehybridguy Nov 02, 2008 (5:52 am)
Replying to: pego99 (Jul 18, 2008 9:35 am) The following are the correct procedures to jump start a Nisson Altima Hybrid 2007-2008 as outlined in a recently released Hybrid Vehicle Jump Start Towing Guide available at the hybridhazards(dot)info website. Hope this information helps you out.   Jump Starting the low voltage battery. If the instrument cluster lights are DIM, the 12 volt auxiliary battery can be jump started. The battery is located in the trunk on the passenger’s side under a cover. Use the following Jump Start procedure. 1.Connect the 12 volt Positive (+) booster cable to the 12 volt battery Positive (+) terminal in trunk of the Altima. Connect the other end of the booster cable to the 12 volt Positive (+) terminal of the booster battery. 2.Connect the Negative (-) booster cable to the battery Negative (-) terminal in trunk of the Altima. Connect the other end of the negative (-) booster cable to a good clean metal ground on the booster vehicle’s engine compartment away from the battery. 3.Start the booster vehicle and allow it to run for a few minutes. Make sure all accessories on both vehicles are off. 4.Hold the brake firmly, press the start button and look for the ready light. Once vehicle starts leave vehicle in park - disconnect the negative cable first then remainder of cable disconnects. Jump Starting the HV BatteryIf the high voltage battery is low you can try to start the vehicle using the following steps, making sure first that the vehicle is not out of gas. 1. Confirm that the instrument cluster lights are BRIGHT and vehicle is in Park. 2. Press the start button to ACC. Mode. 3. Press and hold the start button for 15 seconds. If the vehicle starts this way you should have it checked by your dealer.   Please be careful anytime you are working around Hybrid Vehicle battery terminals.   Stay Safe!   Pat
#6 of 9 NAH Jump starting by cephraim Nov 03, 2008 (5:42 am)
re: "Connect the 12 volt Positive (+) booster cable to the 12 volt battery Positive (+) terminal in trunk of the Altima."   Huh? Aren't there posts under the hood that are the preferred location to connect the cables to? Replies to this message: tomscot2 (Nov 03, 2008 10:09 am)
#7 of 9 Re: NAH Jump starting [cephraim] by tomscot2 Nov 03, 2008 (10:09 am)
Replying to: cephraim (Nov 03, 2008 5:42 am) The owners manual is very detailed instructions on how to Jump Start the 12v battery. They recommend using the remote positive battery terminal inside the fusible link box under the hood.   That is how I jump started mine the one time I needed to do it.   The manual is available on the NissanUSA.com website if you need a pdf version.
#8 of 9 How do you jump start the hybrid ? by mcca Apr 14, 2009 (6:36 pm)
Could anyone please tell me what to do if both 12 V battery and HV battery have already discharged (it is left unused too long) ? Can we jump start the hybrid in this situation ? Thanks! Replies to this message: langjie (Apr 15, 2009 1:49 pm)
#9 of 9 Re: How do you jump start the hybrid ? [mcca] by langjie Apr 15, 2009 (1:49 pm)
Replying to: mcca (Apr 14, 2009 6:36 pm) yes

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