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[Doctor Gollum]

'70 with a dead 12v battery... 8.04v across the terminals.

Put a set of jump leads on it, as per the destructions, and the hybrid gubbins woke up instantly. Took a moment to start, and the alternator was doing its thing... 14.08v.

Left to run at a fast idle for 20 minutes, but when left to idle, the stop start crap kills it and it doesn't have the ooomph to restart. Battery voltage unchanged from the initial test.

Conclusion being that the 12v battery is toast?

[TheBoy]

Does sound like a couple of cells have gone.

Strangely enough I have similar symptoms with the Battlebus since I put the old battery back on it .  Its just been idling for the last 2hrs, providing battery support to Mrs TB's car whilst I did a code check and clear.  Stopped it, now it won't start.  Ho hum

[Doctor Gollum]

Anything else left on that poor car to use up? 

[TheBoy]

Anything else left on that poor car to use up? 

The Battlebus is complete and in showroom condition

[Doctor Gollum]

Anything else left on that poor car to use up? 

The Battlebus is complete and in showroom condition

Yet someone bought it new

[TheBoy]

It was never my favourite car, but I would have to concede that it has been a brilliant little car - pretty much indestructible, tidy bodywork, economical, nothing ever needed beyond the most basic servicing (oil, filters, brakes, tyres) except the intakes cleaning out several years ago.  Trying to think what else I had to do beyond that:

CV boot
Replacement turbo (£30)
Maf
Replaced all 4 tyres once
Few sets of brake pads
Rear shocks
Rear wiper arm
Headlight bulb
Backbox

Certainly not bad for over 9yrs, and remove the tyres from that, I bet that adds up to about £150

And I can't knock its versality.

[tigers_gonads]

It was never my favourite car, but I would have to concede that it has been a brilliant little car - pretty much indestructible, tidy bodywork, economical, nothing ever needed beyond the most basic servicing (oil, filters, brakes, tyres) except the intakes cleaning out several years ago.  Trying to think what else I had to do beyond that:

CV boot
Replacement turbo (£30)
Maf
Replaced all 4 tyres once
Few sets of brake pads
Rear shocks
Rear wiper arm
Headlight bulb
Backbox

Certainly not bad for over 9yrs, and remove the tyres from that, I bet that adds up to about £150

And I can't knock its versality.

30 quid for a turbo 
That's cheap 

[Marks DTM Calib]

'70 with a dead 12v battery... 8.04v across the terminals.

Put a set of jump leads on it, as per the destructions, and the hybrid gubbins woke up instantly. Took a moment to start, and the alternator was doing its thing... 14.08v.

Left to run at a fast idle for 20 minutes, but when left to idle, the stop start crap kills it and it doesn't have the ooomph to restart. Battery voltage unchanged from the initial test.

Conclusion being that the 12v battery is toast?

Highly unlikely that there is an alternator, Hybrids usually have a DC-DC to drop the hybrid battery volts down to the 12V battery level. 

[TheBoy]

'70 with a dead 12v battery... 8.04v across the terminals.

Put a set of jump leads on it, as per the destructions, and the hybrid gubbins woke up instantly. Took a moment to start, and the alternator was doing its thing... 14.08v.

Left to run at a fast idle for 20 minutes, but when left to idle, the stop start crap kills it and it doesn't have the ooomph to restart. Battery voltage unchanged from the initial test.

Conclusion being that the 12v battery is toast?

Highly unlikely that there is an alternator, Hybrids usually have a DC-DC to drop the hybrid battery volts down to the 12V battery level. 

It was a near new one found on the Gay of E by that nice Mr DTM chap, who then fitted it as well

[Keith ABS]

 As much as some people slag them off, Zafs are a very versatile vehicle. Carniverous load space for its size, good ecomony and not to bad driving comfort

[TheBoy]

As much as some people slag them off, Zafs are a very versatile vehicle. Carniverous load space for its size, good ecomony and not to bad driving comfort

As a tool, they are hard to argue against .  They can legally carry 7, at the expense of only having minimal luggage space, or 5 with decent luggage capacity, or 3 with extreme luggage space.

And ours consistently managed high 30s to low 40s MPG over a tank of diesel.

[Doctor Gollum]

'70 with a dead 12v battery... 8.04v across the terminals.

Put a set of jump leads on it, as per the destructions, and the hybrid gubbins woke up instantly. Took a moment to start, and the alternator was doing its thing... 14.08v.

Left to run at a fast idle for 20 minutes, but when left to idle, the stop start crap kills it and it doesn't have the ooomph to restart. Battery voltage unchanged from the initial test.

Conclusion being that the 12v battery is toast?

Highly unlikely that there is an alternator, Hybrids usually have a DC-DC to drop the hybrid battery volts down to the 12V battery level. 

I definitely has one

[Doctor Gollum]

'70 with a dead 12v battery... 8.04v across the terminals.

Put a set of jump leads on it, as per the destructions, and the hybrid gubbins woke up instantly. Took a moment to start, and the alternator was doing its thing... 14.08v.

Left to run at a fast idle for 20 minutes, but when left to idle, the stop start crap kills it and it doesn't have the ooomph to restart. Battery voltage unchanged from the initial test.

Conclusion being that the 12v battery is toast?

Highly unlikely that there is an alternator, Hybrids usually have a DC-DC to drop the hybrid battery volts down to the 12V battery level. 

I definitely has one

Actually, I stand corrected, although the voltages suggest that it works like one...

[Marks DTM Calib]

It definitley doesn't 

The DC-DC will obviously manage charge volts for the small lead acid 12V battery so might appear that there is.

What should happen is that the DC-DC and charge controller should always be trying to keep the 12V battery topped up, even when the car is asleep, from the traction battery (as long as it has reasonable state of charge)(. When this is not working properly then the 12v can deep discharge at which point its game over and the battery will be fried as they are pretty small.

This is made worse by Toyota having issues with battery drain and DC-DC charge control, Toyota even had a marketing campaign recently promoting use of smart chargers and solar chargers   

[Doctor Gollum]

I would be surprised if that car has done 2,000 miles since it was built