CTEK Battery Tender Question (picture attached)

Yes, You would expect to see 1 of the lights on- turn the ignition on and see if the charger conne tion warning comes on. That will tell you the system has detected the charger, if it does not it might be your plug connection. I am talking from a 430 experience so slightly different.

 

Pity u cannot connect it to a known charged battery, is the charger new ?
Is that one the 0.8 amp output type, ok to float charge but ctek do a 5 amp version which is a lot better
Put a voltmeter on the charger output to see if it has any output. Only other thing to note, these will not charge a fully flat battery, it needs to sense volts so it knows where it is and what to do.
You can try conne ting up a conventional charger for a few hours then go back to this ferrari one

 

A friend had same issue and had it replaced by Ferrari.

 

I've had a number of Ctek chargers with issues connecting and charging, across a variety of cars. I believe I'm on my third in the past couple of years. They seem to be sensitive to the order in which they are connected to the charge point, and powered on, with whatever tech the units are using to 'sense' a battery is there to be charged.

 

It looks like the 0.8 amp type, id label on the unit tells you. A better one is the ctek mxs 5.0 and it comes with some eyelet connectors you can wire up permanent to the battery or else where, you can also get an extension cable so you can run it to where you want in the car. A new ctek is a lot cheaper than a used one with ferrari on it, yet all made by ctek in sweden.

 

There are instructions on here how to make a pig-tail that allows you to connect a ctek to the standard 599/612/430 battery tender connection point. After my Ferrari ctek tender ate my 612 battery years ago, I made the pigtail, bought a more heavy duty ctek tender, and use the standard connection point in the trunk - this preserves the no-start-with-tender-connected feature. If you don't want to make it yourself, you can purchase from either of a couple of sources.

 

Do you have a link where to get this ? Ta

 

Here is the info I followed to build it myself: http://www.ferrarichat.com/forum/technical-q/347563-yabtp-making-battery-conditioner-connected-light.html
I think he also offers to build it from you.

Some other discussion here:
http://www.ferrarichat.com/forum/612-599/470825-ctek-charger-failure.html

 

Why do you need a tender? I have never used a tender on any Ferrari I have owned and have never had a flat battery. Been on holidays, come back a month later and she fires up no problem.

 

Fine if u use every day, mine wont go for more than 3 days without it.

 

https://www.amazon.com/gp/product/B006G14FK8/ref=oh_aui_search_detailpage?ie=UTF8&psc=1

CTEK MUS 4.3

Do yourself a favor.

 

That's exactly how mine looks for my 612. It keeps the battery fully charged even though no other lights ever come on.

BTW, the CTEK is not a "charger", it is a "tender". If your battery ever becomes fully discharged, the CTEK will not recharge it (in fact no lights will come on if you connect it to a dead battery), you will need an actual battery charger.

 

Mine shows the green light just like your pic, but none of the other lights ever come on.

 

Unfortunately I don't drive mine every day. Sometimes it can be 2 to 3 weeks and have no problem starting.

 

FMS has never advised me of this. Who advised you? was it a senior tech or service adviser?

 

I'm not sure that's right Paul. Admittedly mine was charged up by a friend's MXS 10 rather than the MXS 5 I have bought but I have no reason to believe the result would have been any different. It could be the standard Ferrari issue will not do it but I wouldn't say that applies to all Ctek.
Personally if your charger is not showing all the lights just buy a new standard Ctek model. The new models are more advanced and there is no downside for a very modest $100 outlay.

 

That's the same set up I have and I'm very happy with it. I may preemptively buy another adaptor just in case my Scud charger fails as they seem to be a little harder to find.
There must be 12 other Ferraris of varying vintage parked in "my" garage and a quick walk around showed that almost all of them are still on the original charger. That would suggest they are quite reliable so maybe mine had been dropped or something? Can't imagine Ctek producing a version of the LaFerrari charger anytime soon, it's about the size and shape of a vacuum cleaner.