By Core Brake Parts Tech Team — Circleville, OH warehouse
The 2014-2016 Maserati Ghibli uses an Electric Parking Brake (EPB) that applies itself when you shut the engine off and releases when you drive away. When it drags, will not hold, or throws a warning, the cause is usually one of three things: parking brake shoes that are out of adjustment, a system that has not been recalibrated after rear brake work, or a low battery. Maserati's own fix combines a mechanical shoe adjustment through the rear rotor with an electronic recalibration on a factory-level scan tool.
How the Ghibli Parking Brake Works
The owner's manual describes the system as an electric automatic parking brake. In normal use you never touch it. It engages automatically when the engine is turned off, and it disengages when the engine is running, the driver's door is closed, and you press the brake pedal while moving the shift lever out of Park. When it applies or releases, a warning light on the instrument cluster flashes until the brake reaches full clamping force or is fully released, and a message appears on the cluster display.
What many owners do not realize is that the brake has a mechanical side as well. Maserati North America Technical Bulletin MAS000750, which covers the Ghibli (M157) and Quattroporte (M156) from the 2014 model year on, describes parking brake shoes that lock the rear rotor, with a toothed adjustment wheel reached through an inspection hole in the rotor. The electric actuator does the applying, but the shoes inside the rear rotor still need to be set to the right clearance for the electronics to work correctly.
| Part of the system | What it does | What goes wrong |
|---|---|---|
| EPB control and actuator | Applies and releases automatically; lights the warning lamp | Warnings, failure to release, stored fault codes |
| Parking brake shoes (rear) | Lock the rear rotor when applied | Out of adjustment: drags, or holds poorly |
| Toothed adjustment wheel | Sets shoe clearance through the rotor inspection hole | Over-tightened after service, or never set after new rotors |
| Rear pads and rotors | Service braking on the rear axle | Separate wear item; replaced on its own schedule |
Common Ghibli Parking Brake Problems and Symptoms
- Parking brake warning on the cluster - the EPB light stays on or keeps flashing, or a parking brake message appears. The system has either not reached full force or has logged a fault.
- Rear brake drag or heat - one rear wheel is noticeably hotter than the other after a drive, you smell hot brakes, or the car feels like it is pulling against something. Shoes set too tight will rub the inside of the rotor hat.
- Weak hold on a hill - the car creeps when parked on a slope. Shoes with too much clearance cannot lock the rotor even with the actuator at full travel.
- Brake will not release - the car stays locked after you select Drive. Check battery condition first, because the electric actuator needs good voltage to work.
- Problems starting right after rear brake work - new rotors change the shoe clearance, and the system expects a calibration after the hardware is disturbed.
Rear brake squeal and a pulsing pedal are usually not parking brake faults. Those point to the service brake: worn rear brake pads or rotors with uneven deposits.
How to Diagnose It
- Check the battery. The owner's manual tells you to confirm the battery is sufficiently charged, or connect an external power source, before dealing with a parking brake that will not release. A weak battery is the cheapest thing to rule out.
- Read the codes. Parking brake faults are stored in the EPB module. A generic code reader often cannot see them; you need a scan tool with Maserati EPB coverage, or the dealer's Maserati Diagnosi system.
- Check for drag. With the car safely supported and the parking brake released, spin each rear wheel by hand. A wheel that is hard to turn, or turns much harder than the other side, points to tight shoes.
- Check hold. If the car rolls with the parking brake applied on a moderate grade, the shoes are likely too loose or worn.
- Look at recent history. If the rear rotors were just replaced, adjustment and calibration are the first suspects.
The Maserati Adjustment Procedure
Bulletin MAS000750 lays out the factory method, to be used alongside the workshop manual sections it references. In summary:
- Rotate the rear rotor until its inspection hole lines up with the toothed adjustment wheel.
- With a flat blade screwdriver, turn the adjustment wheel one click at a time, checking after each click whether you can still turn the rotor by hand, until the shoes lock the rotor. Stop at the click that locks it.
- Mark a tooth on the adjustment wheel so you can see it through the hole.
- Turn the wheel the opposite direction, loosening the shoes, 10 clicks only, and confirm your mark is back in its original position.
- Confirm the rotor now turns freely by hand, then repeat the whole process on the other side.
- Using Maserati Diagnosi, run the "OEM Factory Calibration" procedure found under Active Diagnosis.
- After calibration, confirm both rear wheels still turn freely, and do not touch the adjustment wheel again.
- Clear all EPB fault codes with the scan tool.
The mechanical part is simple and needs only a screwdriver. The calibration is the catch: it must be done with a tool that can command the Ghibli EPB. Skipping it is the most common reason a parking brake still misbehaves after a correct shoe adjustment.
What If the Parking Brake Will Not Release
The owner's manual is direct about this: if the parking brake is applied and you cannot release it, do not move the vehicle, because the rear brakes can be damaged. On all-wheel-drive versions it also warns against moving the car with only the rear axle lifted, because the AWD system can be seriously damaged. The manual's emergency release involves working on the rear brake hardware to relieve the clamping force, and it directs owners to the Maserati service network for that job. If the car has to be moved, a flatbed is the safe choice.
Rear Brake Service and What to Replace Together
Because the parking brake and the rear service brake share the rotor, the two jobs overlap. Any time the rear rotors come off, plan to re-set the shoe adjustment and run the calibration afterward. Good practice on a Ghibli rear brake job:
- Replace rear rotors and pads as a pair when the rotors are at or near their minimum thickness, and inspect the inside of the rotor hat where the shoes ride.
- Inspect the parking brake shoes for wear, contamination, or glazing while the rotor is off.
- Replace brake hardware such as clips and pins if they are corroded or weak.
- Follow the workshop manual for torque values and the service sequence for your VIN.
For the rear pads, we carry the EBC Redstuff ceramic rear brake pads for the 2014-2016 Ghibli 3.0L twin turbo. EBC builds Redstuff with aramid fiber and ceramic particles and no steel fiber, which it says cuts dust sharply compared with semi-metallic pads and cleans off wheels with a simple wash. EBC also notes Redstuff can take up to about 1,000 miles to fully bed in, so expect the pedal feel to improve over the first few weeks. If you are doing the front axle at the same time, see the EBC Yellowstuff front pad set for the 2014-2016 Ghibli and confirm the part against your caliper before ordering.
How Hard Is the Job?
A rear pad and rotor job on a Ghibli is within reach of an experienced home mechanic. The parking brake part of it is not hard mechanically; the adjustment is a screwdriver and patience. The real barrier is electronic: the Maserati procedure ends with a calibration and code clearing on a factory-level tool. If you do not have a scan tool that supports the Ghibli EPB, do the mechanical work yourself and have a Maserati dealer or a specialist with the right tool finish the calibration. Driving on an uncalibrated system invites drag, warnings, and a repeat visit.
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Shop Brake Pads & Kits →Frequently Asked Questions
Does the 2014-2016 Maserati Ghibli have a manual parking brake?
No. It has an Electric Parking Brake that engages automatically when the engine is turned off and releases when you drive away with the door closed and your foot on the brake.
Why is my Ghibli parking brake light flashing?
The light flashes while the brake is applying or releasing. If it keeps flashing or stays on, the system has not reached full force or has logged a fault. Check the battery and read the EPB codes.
Can I adjust the Ghibli parking brake myself?
You can do the mechanical shoe adjustment through the rotor inspection hole with a flat screwdriver. Maserati's procedure then requires an electronic calibration and code clearing with a scan tool that supports the Ghibli EPB.
Do I need to recalibrate the parking brake after replacing rear rotors?
Plan on it. New rotors change the shoe clearance, and the factory procedure pairs the shoe adjustment with an electronic calibration.
What should I do if the parking brake will not release?
Do not drive it. The owner's manual warns that moving the car with the parking brake applied can damage the rear brakes. Check the battery, then contact a Maserati service center. Use a flatbed if the car must be moved.
Sources
- Maserati North America Technical Bulletin MAS000750 (via NHTSA) - EPB mechanical adjustment, 10-click back-off, Diagnosi calibration, 2014 and later Ghibli (M157)
- Maserati Ghibli Owner's Manual - Parking Brake - automatic engage and release conditions, warning light behavior
- Maserati Ghibli Owner's Manual - Emergency Release of the Parking Brake - battery check, do not move vehicle, AWD caution, contact service
- EBC Brakes - Redstuff Ceramic Brake Pads - compound, dust reduction, bed-in period
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