AAAARGH- No crank

BRIDGEMILL

Junior Member
Messages
43
It won't. Far more likely that it's either
a) The car battery, although this seems unlikely but per Matt's comments, not impossible
b) The ignition switch
c) The antenna around the ignition barrell.

Just looking through the manual you've checked relay T19 and T20 (Ignition and ignition enable)? Not completely clear what they do but...Also F30 and F84?

PS The key fob battery has nothing at all to do with starting the car. All it does is unlock / lock the doors and arm / disarm the alarm (unless they fitted keyless start on post 2013 cars)

C
Yeah- checked all fuses- all good and all getting power.
 

Zep

Moderator
Messages
9,110
Things I would try.

Check the quick release battery ground. As your problem started when you changed the bat, a variation in the terminal dimensions might have made it loose.

Check all of the fuses in the box attached to the positive terminal, this type of fuse can fracture, looking like they are intact but disconnecting important stuff.

Putting the old battery back and seeing if it starts then. This would disprove dodgy battery.

Find and check the tracker. These have a relay in them which enables the starting circuit. If the relay goes faulty it stops the car starting.
 

spkennyuk

Member
Messages
5,932
Disconnect the battery and leave it for 20 mins and then try again.

Make sure your foot is on the brake pedal when you try to start it.

If the brake pedal switch has gone faulty as far as im aware it wont let you start the car.

If you have an obd code reader is it throwing up any errors ?
 

BRIDGEMILL

Junior Member
Messages
43
Disconnect the battery and leave it for 20 mins and then try again.

Make sure your foot is on the brake pedal when you try to start it.

If the brake pedal switch has gone faulty as far as im aware it wont let you start the car.

If you have an obd code reader is it throwing up any errors ?
Things I would try.

Check the quick release battery ground. As your problem started when you changed the bat, a variation in the terminal dimensions might have made it loose.

Check all of the fuses in the box attached to the positive terminal, this type of fuse can fracture, looking like they are intact but disconnecting important stuff.

Putting the old battery back and seeing if it starts then. This would disprove dodgy battery.

Find and check the tracker. These have a relay in them which enables the starting circuit. If the relay goes faulty it stops the car starting.
Yeah checked all the terminals- all tight- getting full 12.6 volts at the battery posts and also cable to cable. All the fuses on the module are good. What's the Tracker?
 

BRIDGEMILL

Junior Member
Messages
43
Disconnect the battery and leave it for 20 mins and then try again.

Make sure your foot is on the brake pedal when you try to start it.

If the brake pedal switch has gone faulty as far as im aware it wont let you start the car.

If you have an obd code reader is it throwing up any errors ?
 

BRIDGEMILL

Junior Member
Messages
43
Yeah- did the battery disconnect thing. Foot on brake. Could be the brake pedal switch, will have to test it. I have a scanner, but it has all the cars except Maserati. I ordered a Foxwell 650 which should be here in a few days.
 

Saigon

Member
Messages
778
Yeah- did the battery disconnect thing. Foot on brake. Could be the brake pedal switch, will have to test it. I have a scanner, but it has all the cars except Maserati. I ordered a Foxwell 650 which should be here in a few days.
If it started ok with the old battery, charge the old battery and put it back on. Depending, then back to basics, have you got voltage to the starter motor, if not have you got energising voltage to the starter solenoid coil, if so have you got voltage to the starter solenoid its self. Work backwards from there. Bottom line, if it started ok on the old battery you have more than likely created the fault.
 

Moz1000

Member
Messages
820
When you try to crank, do you get a message on the dash saying put your foot on the brake pedal? If you do, and you are, it's the brake switch. If you don't it's something to do with the battery connection. Remember, you can still get a good voltage reading whether or not the connection is good. A poor connection will not conduct the required current but may still show >12 volts.
Moz
 

BRIDGEMILL

Junior Member
Messages
43
Agree- always start at the last thing you did. However, the battery is good- full voltage. I was driving the car fine on the old battery, and the last time I drove it was at night with lights on- it ran fine and I came home and parked it. Next morning the battery was totally flat, as if something had drained it. That was when i decided to put in a new battery. After I installed the new battery it started fine and I let it run for a bit while I buttoned up the rear cover in the trunk. I went out later to start it and it turned a bit and then wouldn't go again. You may be right about the starter- maybe I have a loose connection. What side of the motor is the starter on 2013 gran tourismo- I'm in a home garage, so jacking things up is not easy.
 

BRIDGEMILL

Junior Member
Messages
43
When you try to crank, do you get a message on the dash saying put your foot on the brake pedal? If you do, and you are, it's the brake switch. If you don't it's something to do with the battery connection. Remember, you can still get a good voltage reading whether or not the connection is good. A poor connection will not conduct the required current but may still show >12 volts.
Moz
No I don't get that message. Battery is good and connections are perfect- I'm suspecting a loose cable on the starter- which side of the motor is the starter- I don't have a hoist.
 

Swedish Paul

Member
Messages
1,807
There are loads of connectors around where the battery is. Connecting to control units and such. I had an issue develop after I changed my battery on my GS which was the same. I think what happened was that I disturbed one of the connections to the gearbox ECU, specifically from the start button. Look and push home all the cables around, not just to the battery.
 

BRIDGEMILL

Junior Member
Messages
43
Thanks- I have checked all those connections and the fuses etc.- all good, I'm waiting for a new scanner to arrive and check to see if I created a fault code one one of the modules.
 

Saigon

Member
Messages
778
Thanks- I have checked all those connections and the fuses etc.- all good, I'm waiting for a new scanner to arrive and check to see if I created a fault code one one of the modules.
To be honest a scanner as you call it is not a magic wand, seems like you would be better spending the money on calling out an auto electrician, he doesn’t even need to know what a Maserati is. Just an experienced auto electrician would do.
 

Zep

Moderator
Messages
9,110
Yeah checked all the terminals- all tight- getting full 12.6 volts at the battery posts and also cable to cable. All the fuses on the module are good. What's the Tracker?

The tracker is a factory fitted box that allows the car to be found if stolen, you should have some credit card sized black boxes with the car, that’s what they are for. It also has a relay to stop the car starting, it interrupts the start signal from the gearbox computer to the relays under the bonnet that engage the starter. Mine went wrong and stopped the car starting just like this, but it gave me the “go to dealer and spend loads of money” message.

To be honest, if there was a fault with most things, it would give that message, so there is something more fundamental at play.

In the box with the ignition relays you mentioned there is one called the “start enable relay”. I would pull this relay and test it and see if you get 12v to the coil when you turn the key.
 

BRIDGEMILL

Junior Member
Messages
43
To be honest a scanner as you call it is not a magic wand, seems like you would be better spending the money on calling out an auto electrician, he doesn’t even need to know what a Maserati is. Just an experienced auto electrician would do.
I know they are not magic wands, but very essential in finding problems on all the newer cars. I am a DIY type, and to call out a technician once would be more than the scanner, which I will have in my toolbox forever.
 

BRIDGEMILL

Junior Member
Messages
43
The tracker is a factory fitted box that allows the car to be found if stolen, you should have some credit card sized black boxes with the car, that’s what they are for. It also has a relay to stop the car starting, it interrupts the start signal from the gearbox computer to the relays under the bonnet that engage the starter. Mine went wrong and stopped the car starting just like this, but it gave me the “go to dealer and spend loads of money” message.

To be honest, if there was a fault with most things, it would give that message, so there is something more fundamental at play.

In the box with the ignition relays you mentioned there is one called the “start enable relay”. I would pull this relay and test it and see if you get 12v to the coil when you turn the key.
Thanks,
I did not get those tracker devices with the car, unless they are hidden somewhere. Yes, the only thing that never fails on these cars is the "Go to Dealer " message.
 

Saigon

Member
Messages
778
I know they are not magic wands, but very essential in finding problems on all the newer cars. I am a DIY type, and to call out a technician once would be more than the scanner, which I will have in my toolbox forever.
Agreed mate, but he would likely diagnose your problem very quickly, DIY is fine if you know what you are doing. And scanners don’t just pop up and say, here is the fault, job done. Unfortunately, I don’t have the expertise you have, so rightly or wrongly eventually I call in the professionals. Trouble shooting is much different to DIY.
 

Zep

Moderator
Messages
9,110
Thanks,
I did not get those tracker devices with the car, unless they are hidden somewhere. Yes, the only thing that never fails on these cars is the "Go to Dealer " message.

They are factory fitted (U.K. cars anyway), so even if you didn’t get the cards, you will have the box that could fail.

Did you locate the start enable relay?