575 Crank but no start

Hi, first time poster here!

Over the past couple weeks I've been working on a neighbour's 575 (F1 Gearbox) which has been sat for nearly 15yrs due to a breakdown - I'm pretty sure is because the starter motor was seized out as I disassembled the old starter and it was completely burnt out! After fitting a new starter and battery the engine cranks but it doesn't start as there's no spark. When I turn the ignition on the gear indicator flashes in Neutral and the red F1 light stays on, when I try to select neutral I here a loud hum which I'm guessing is the F1 pump, but the gear indicator doesn't stop flashing. Will this fault prevent spark? Any common faults to look for? I noticed chewing to an earth for the abs pump so I'm wondering if the wires for the f1 system may be damaged aswell.

Thank you!

 

Hi, Ben. Welcome to the forum.

Typically, the F1 system inhibits cranking on Ferraris if the car doesn't go into neutral, but that seems to be working ok. Is your immobiliser system LED going out?


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The immobiliser will stop the ignition/fuel systems operating.

On some Ferraris, the battery in the alarm siren can leak and create a short circuit, blowing the immobiliser fuse. Perhaps you can check the fuse? I think it's fuse 26 in the passenger footwell (brown 7.5 amps).

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I'm assuming you have the key fobs (with good batteries in them).

 

Yup, 575M cranks fine but will not start if the immobilizer is armed or inop. Ask any 575 owner who got gasoline and forgot to use the fob to disarm the alarm/immobilizer. Cranks fine, but no start.

 

Thanks for the info.

Checked all fuses and they are ok. I have tried both the master and spare keyfob and neither seem to do anything but flash when the button is pressed. When I unlock the car with the key and shut the door the immobiliser light flashes fast for 20s and then slows after. The master fob has a metal tag with K followed by 4 digits engraved, I tried manually inputting the code with the ignition switch but the immobiliser light continues flashing - guessing this is just a serial for the fob. Going to have a look through the paperwork tomorrow in hopes of finding the code!

Cheers

 

A few random thoughts and fuzzy recollections but (1) are your fobs unlocking/locking the doors ? (2) are you pushing hard on the brake when you try to start (3) the immobiliser code is on a small piece of paper about 2 inches x 1.5 (4) metal tag is key code (5) are you getting 'check ok' displayed before trying to start

I'm fairly sure the gear number should not be flashing - also can the immobiliser get confused if the key is used to lock/unlock the car ? Can others confirm please

 

Indeed, it doesn't sound normal, but the F1 system only inputs into the starter system, but not, as far as I know, into the ignition system.

Maybe we can get some engine or geabox fault codes? There are too many variables at the moment.

 

Change the batteries on the fobs. Quite often, you will see the fob LED flash, but without enough power to unlock the door or disarm the alarm/immobilizer.

Also, the code on the key tag itself has nothing to do with the alarm, but is a code for ordering a new key. The PIN should be among the documents in the owner's manual pouch. This document will show you what it looks like.

 

Had a similar sounding problem with my 575...bad immobilizer/siren module....likely due to leaking battery. Replaced....fixed the problem.