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I have a 2005 Lotus Elise. This week, while I was driving the car, the Battery Charging Tell Tale light came on. Shortly afterwards, the car simply died and would not start. I jump started the car, but it would die after the jumper cables were removed. Eventually, I removed the battery and had it tested - it tested out as Good and was fully recharged.

I put the battery back in the car and everything seems back to normal. None of the tell tale lights are coming on while driving (including the Battery Charging tell tale).

Still - I'm concerned that there may be an issue with the alternator. I went to an O'Reilly's today and had them do an alternator test. The test said that the diodes were Good but voltage was low. Sounds like I need to replace the alternator.

But - if there's an issue with the alternator - shouldn't the Battery Charging tell tale light come on and stay on while I am driving? Or does this light only come on moments before the battery croaks?:confused:
 

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I have a 2005 Lotus Elise. This week, while I was driving the car, the Battery Charging Tell Tale light came on. Shortly afterwards, the car simply died and would not start. I jump started the car, but it would die after the jumper cables were removed. Eventually, I removed the battery and had it tested - it tested out as Good and was fully recharged.

I put the battery back in the car and everything seems back to normal. None of the tell tale lights are coming on while driving (including the Battery Charging tell tale).

Still - I'm concerned that there may be an issue with the alternator. I went to an O'Reilly's today and had them do an alternator test. The test said that the diodes were Good but voltage was low. Sounds like I need to replace the alternator.

But - if there's an issue with the alternator - shouldn't the Battery Charging tell tale light come on and stay on while I am driving? Or does this light only come on moments before the battery croaks?:confused:
Check all four battery connections. Yes, four, because there are adapters in the battery cables at the battery. Also check the alternator connections.
 

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Discussion Starter #3
The battery and alternator connections all appear to be ok.

I'm still wondering why the Battery Charging tell tale is not coming on (if there really is an issue with alternator).
 

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Its possible that its not a constant problem. It won't always 100% come on when there is an issue with the alternator.
 

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Discussion Starter #5
Well, ok. I ordered a replacement alternator. Looks like an Ultima #13879. Does anyone Know if is the correct part for an '05 Elise? Just yank out the old one and pop in this new one?
 

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disconnect battery 1st.

did you use voltmeter to check voltage at battery w/engine off and engine running? You should see, w/good alternator, ~14.2 volts w/engine running.

did you use meter to check connections: Post to clamp, clamp to next connection?
 

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Discussion Starter #7
Well, the battery croaked again. This time when I took it to O'Reilly the battery tester came right back with "Bad Battery".

Anyone have an idea why Lotus of Atlanta wants to charge me $1200+ for a new alternator (part #A120E6369S)? Is this the same alternator as a Celica GTS (cost around $200)?
 

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Don't throw parts at it.

Get a voltmeter and see what voltage alternator sends to battery when running.

You can also actually check voltage at each connection (vs just looking at them).

Plenty of info here and in other threads. OK?
 

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so is there a preferred brand of alternator for the 2005 elise?

i noticed prices online ranging from $100-$400

some new and some rebuilt.
 

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Second the don't throw parts at It. What kind of Battery is it? How old is it? When its running what are you getting for voltage?

A battery can show a good charge but have way less cranking amps. Everything can work great but starters draw a lot of juice.
 

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i'm leaning towards alternator vs the battery because the battery tender is "green light" and when i go to start it...i hear clicking and car doesnt turn over.
when i jump start it, it starts and then after a little bit just stops.
i would think if battery was the issue, the tender wouldnt show a green light meaning full charge and if the battery was dead, there wouldnt be any clicking when trying to start it.
 

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i'm leaning towards alternator vs the battery because the battery tender is "green light" and when i go to start it...i hear clicking and car doesnt turn over.
when i jump start it, it starts and then after a little bit just stops.
i would think if battery was the issue, the tender wouldnt show a green light meaning full charge and if the battery was dead, there wouldnt be any clicking when trying to start it.
I keep a battery tender on all 3 of my cars. My Track car and my Evora have both shown a green but did not crank. Cranking AMPS! Name of the game! Battery's will lie to you.

As I asked before, what kind of battery is it? I have run some crap on all 3 of my cars and they don't last long. Especially if you have a lightweight battery like an odyssey. I use an ATV Interstate on the Exige and get maybe 2 years out of it. Interstate MTP-91 full sized on the Evora and I'm lucky to get 3 years.
 

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If it won't start after being on a tender, it aint the alternator

When you start the car and it is running on its own, you should see 14 volts or so. Less than 13.5 and your alternator is not working[or not connected etc]

If you are seeing over 14 volts and the car will not restart, the battery is bad.

This is not all that mysterious, although many mechanics cannot seem to figure it out
 

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So I should jump start it, take the tender and jumper off the battery, rev it a bit, then multitest it and check voltage?
 

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I also noticed when I took it for a ride on Sunday after jump start, the red rev limiter light was flickering with varying brightness.
 

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so the har has been on trickle...green light on it.....today i tried to start it and nothing but clicks, i hooked up the jumper and it started right up, as soon as i removed the jumper it died.
not sure if it means anything but the volt meter said 12.8V when the car was off and no trickle/jumper attached.


i wasnt able to start it without the jumper battery attached.


i noticed if you lift up the carpet near the battery there is what looks like the need for an allen wrench, i guess to remove the bracket...is that how you remove the battery?

i saw that autozone had a battery that said it fits stock.
 
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