California - AVH system failure, CST system failure & Manetinno failure

Had the same issue on my 2015 T. Came up every time I took the car out, could not reproduce reliably. Master Ferrari tech said it is a common problem caused by a faulty brake switch sensor. Took Ferrari 30 minutes to replace the sensor and I have not seen the issue since.

 

Same thing happened to my 2016 Cali T last week.

Went for a 4 hour drive, everything was fine, then while on a stop light when the light turned green I released the brakes, a few seconds later I got this fault messages:

Manetino failure, Suspension Failure, ABS System Failure.
Drove straight home and made an appointment with the dealer for next week.

Took my car for a drive yesterday and everything was fine.

Will post update once dealer gets done checking my car.

Dan

 

Do you have the auto stop feature turned on? It could just be your battery voltage wasn't good enough after the engine started back up. This problem seems to pop up a lot over low voltage.

 

Thanks for chiming in Scott.

My first thought was it could be a weak battery too except my battery is only 1 year old and the CTEK battery tender is always hooked up to my car when its sitting in my garage.

Also, my car does not have the Stop Start feature and thank God. I absolutely hate those things.

 

• Was it the brake switch? My F12 did this to me today, funny Cali T never did and drove mine daily for 30k miles.

 

Update on mine: Dealer found nothing.

They blamed it on my brake light rewiring and charged me $500.00 for troubleshooting time.

Issue never came back again.

 

I've been sniffing the CAN BUS data and I have found that if you are not careful when connecting to the canbus, the Ardunio or Raspberry Pi can cause a voltage fluctuation that causes these issues. Do you have any after market device connected to the CANBUS? ie RadioSteering Can box, After Market Camera Can Box Reader, etc?

 

Hi Scott,

I have nothing connected to CANBUS.
I do have front and rear parking cameras installed and also front and rear dash cam but none of them are connected to CANBUS system.

Dan

 

Actually the camera system from Naviks, does Snoop the CANBUS. Thats how it determines if the car is in reverse.

I've looked at the schematics of the rear break lights, and of your mod to them. There is no way that those would cause the failure warnings you have described.

A glitch could have occurred in the CANBUS signal causing fake warnings. If it hasn't occurred again, I wouldn't worry.

 

Excellent info.

Thanks for sharing Scott!

Dan

 

Wonder if my built in radar may be contributing, came with the car…

 

Depends on how they wired it, what fuse they attached it to. Our carts are super finicky when it comes to voltage spikes and drops.

 

Update to this thread. My 2015 California T started throwing fault lights: ESC failure, AVH and Manettino. Found this thread. Tried restarting, but the faults still threw, sometimes at start, sometimes after 5-10 minutes of driving. Took it to my local mechanic (I’m in Tucson, which does not have a Ferrari dealership), who tested my battery, ran a diagnostic and found no smoking gun. Kept long on. Became a safety issue, as the ESC was disabled when the fault threw. Drove me crazy. Did more poking around online and did see where the brake switch/sensor could be the culprit. Had my guy order the part, took it down to the shop, replaced the switch. Solved the problem. No more faults after driving 3 months and almost 200 miles.

 

Do you have the part #, Adele? My 2015 did this a couple of times last month, and I seem to have found if I step more firmly on the brake pedal when I turn the key it does not occur. It's easy to see when it's going to happen as the TFT will read "comfort" when the mannetino switch is set to Sport when you turn the key (before you hit the start button).

 

Hi, vjd3: the part is called a “stoplight switch”, acc. to my local shop. The part came out of Phoenix: “GT Car Parts”. The part number they gave him was #201957. Not sure if OEM. Guessing it is. Didn’t talk directly to Chris but to the service writer, so can double check tomorrow (I called at 4:55 pm today and got the sketchy info above.
My shop is Autohaus in Tucson, which has a fantastic Ferrari Mechanic. He knows I want and prefer EOM parts. Have dealt with Ferrari of Scottsdale and Ferrari of Denver for years. Would put him up against anyone there. My Cali would also arbitrarily switch over from Sport to Comfort every time the faults threw. It got steadily worse so your switch may be dying but “not dead yet”.

 

Cali 2010. AVH failure happened to me today for the first time after brake fluid exchange at my Ferrari dealer. The system is extremely sensitive for the exact fluid volume in the system they said. So, if you don’t get exactly the volume, the brake switch sensor will notice that and set the error message and it has to be adjusted. It’s a matter of a fraction of millimeters to get it right.

 

So I have the same fault, 2012 cali, all the failure lights listed above, sometimes after a few days, sometimes resets with ignition off and on but sometimes takes longer. Had new battery, it’s on a charger when not driving it lol, had new brake light switch, what’s the next step ?

 

Hi, Phil:
Not sure what to tell ya.
My problem was resolved with the “stoplight switch” replacement. Assuming brake light switch is the same thing. Earlier threads mentioned battery, and since yours is new, .
Do you have a trusted mechanic/dealer?

 

I have had the same errors and it was because of my battery not being on charge when the car was not in use. I left it on charge and didn’t drive my California for a week and that solved it.


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Mines on charge overtime i'm not driving it. The battery thats been fitted is a Bosch ? do I need to go genuine Ferrari ?

 

That's probably the worst thing you can do, the Ferrari OEM batteries are notorious for failing quickly and causing issues. I've had an Interstate in my 2015 since 2019 and 24k miles later it's still trouble-free.

 

I fitted a Ferrari battery and my problems stopped


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Got one coming tomorrow, will try it and see

 

interesting, because my dealer said the same and I have rerouted the brake light function to also lit up the taillight when braking. Somewhat strange as I have had this taillight function quite some time with no faults and when changing brake fluid at the yearly service this problem started.

 

Had the issue after brake fluid exchange. Replaced the brake pedal sensor, problem gone.