|Main Screen for the Think Tech Center diagnostic tool|
|Replacement Power Conversion Unit|
|Bottom view of the installed PCU showing black low pressure coolant hose. The main 400 volt cables are orange.|
I removed the hood, wipers, air intake, vacuum pump and a few other minor items just so I could look over the job while reading the manuals. This way I had a good idea of what needed to be done before explaining the project to the shop technician. Then we had our red Think towed to an independent local shop which has demonstrated interest in EVs, and the real work began.
|Think City EV engine compartment after removing the hood, vacuum pump, wipers, air intake, etc.|
|Wiper mechanism is off to the side|
Soon everything was back together and the Tech Center tool was used to reprogram the VIN and teach the new Vehicle Control Unit to recognize the wireless key fobs, without which the car will not start.
Although I was initially instructed to reprogram the PCU completely, I questioned this since the PCU appeared to be a refurbished unit. Think agreed, and told me to leave the existing programming if it worked. This turned out to be a fortunate event, as the programming in the PCU appears to be newer and a noticeable improvement, especially for highway driving.
|Live data read-out from the Battery Management System|
More about that in a future post, after I have time to plot the data I took comparing both our new and old Think EVs. I then returned the PCU and diagnostic tools, but only after getting logs files of the Live Data shown above and below.
|Live data read-out from the Power Conversion Unit|
The discussion list for the Think City EV over at Yahoo Groups has been very active since the price drop. There have been some relatively minor problems compared to mine, the worst of which might be a bad 12 volt battery. Think service quickly provided a document (now posted over at Yahoo Groups) which details replacement procedures for the battery. (I don't know if this particular 12 volt battery replacement was done at the dealer or by the owner.) There have also been some loose battery cables. The speculation is that the factory disconnected the 12 volt batteries when sales slowed after the bankruptcy, and a few were not reconnected tightly before shipping to the buyers. At these prices, most of us are not complaining very loudly about such things.
|Rear torsion bar suspension|
There is also a survey going on at the discussion list to find out how many owners might be interested in purchasing the diagnostic tool. Think is getting ready to place an order with the supplier in England. I am not the only Think owner who lives far from an authorized service center and wants to own a service tool. As I understand it, it is possible that the price may be lower if enough units are purchased all at once. What the survey leaves out is that there might be an annual software maintenance fee for the most up to date versions.