BMW 550i GT 535i GT Parking Brake with Control Unit - 34436874219 (2010-2017)

RWD and xDrive compatibility:

This 34436874219 parking brake control unit assembly is fully compatible with both rear-wheel drive (535i GT, 550i GT) and xDrive all-wheel drive (535i GT xDrive, 550i GT xDrive) configurations. The parking brake system is identical across all drivetrain variants of the F07 5 Series Gran Turismo. BMW uses the same electronic parking brake assembly regardless of whether the vehicle has rear-wheel drive or all-wheel drive, as the parking brake operates on the rear wheels in all configurations.

F07 chassis specificity:

This part is engineered exclusively for F07 5 Series Gran Turismo models produced from 2010-2017. It will not fit other BMW models even if they appear similar, including F10/F11 5 Series sedans and wagons which use a different part number despite being the same generation, E60/E61 previous generation 5 Series which used mechanical parking brakes, G30 current generation 5 Series which has a redesigned EPB system, or any other BMW models like 3 Series, 7 Series, or X-models which have model-specific parking brake systems.

Production date considerations:

Some early production 2010 models or late production 2017 models may have slight variations due to running production changes or model year transitions. Always verify fitment using your complete 17-digit VIN number. BMW dealers and quality parts suppliers can confirm exact fitment using VIN lookup to ensure the part matches your specific vehicle configuration.

Engine variant compatibility:

This parking brake assembly works with all F07 engine options including N55 inline-6 engine in 535i GT models, N63 V8 engine in 550i GT models, and is compatible with both standard and performance variants. The parking brake system is independent of engine choice.

Equipment package variations:

Vehicles with specific option packages (M Sport, Luxury Line, different wheel sizes) use the same parking brake control unit. However, if your vehicle has been modified with aftermarket wheels, lowering springs, or suspension modifications, verify that rear brake clearance is adequate during installation.

Related component compatibility:

When replacing the parking brake control unit, ensure your vehicle's rear brake pads, rotors, and calipers are in good condition. The electronic parking brake system places specific demands on these components, and worn mechanical parts can cause the new control unit to fail prematurely or function improperly. Many technicians recommend inspecting and potentially replacing rear brake pads and rotors during parking brake control unit replacement, especially on high-mileage vehicles.

Software and coding:

All F07 models use compatible software for parking brake calibration regardless of drivetrain or engine. The ISTA diagnostic system automatically configures the parking brake parameters based on your vehicle's specific configuration data stored in the vehicle's central coding.

Warning Lights and Messages:

"Parking brake malfunction" warning on iDrive display

Red parking brake warning light illuminated on dashboard

"Parking brake: Have vehicle checked by service center" message

DSC/DTC warning lights accompanying parking brake errors

Brake system warning indicators on instrument cluster

Functional Failures:

Parking brake fails to engage when button is activated
Parking brake fails to release when starting vehicle or pressing button

Intermittent engagement or release (works sometimes, fails other times)

Parking brake engages unexpectedly while driving (dangerous condition)

Unusual delay between button press and brake engagement/release

Auto-hold function no longer operates during stop-and-go traffic

Hill hold assist fails to activate on inclines

Noise and Mechanical Issues:

Grinding, clicking, or whirring sounds from rear brakes during engagement

Loud motor noise but no actual brake engagement

Buzzing or electrical humming from parking brake area

Abnormal sounds when parking brake attempts to engage or release

Silence when button is pressed (no motor actuation sound)

Electronic and Diagnostic Indicators:

Fault codes stored: Common codes include parking brake control module faults, actuator motor faults, or communication errors

BMW diagnostic scan reveals EPB system errors
Parking brake cannot be reset or calibrated using diagnostic tools

Multiple related systems showing faults (DSC, brake force display, etc.)

Control unit shows no communication with vehicle diagnostic systems

The electronic parking brake system is a critical safety component that replaces traditional mechanical hand brakes with sophisticated electronic actuation. In BMW 5 Series GT models, the parking brake control unit manages not only parking brake engagement but also integrates with Dynamic Stability Control (DSC), hill hold assist, auto-hold during stop-and-go traffic, and emergency brake assist functions.

Over time, the electronic control unit can fail due to electrical component degradation, moisture intrusion, software corruption, or actuator motor wear. The integrated design means that when the control unit fails, the entire assembly typically requires replacement to restore full functionality.

A failing parking brake control unit compromises:

✓ Parking Safety - Inability to secure vehicle on inclines or during parking

✓ Hill Hold Function - Loss of automatic brake hold on hills during stop-and-go driving

✓ Auto-Hold Feature - Failure of convenience feature that holds brakes at stops

✓ Emergency Brake Assist - Reduced functionality of panic braking enhancement

✓ DSC Integration - Compromised stability control system performance

✓ Vehicle Inspection - Automatic failure of safety inspections in many regions

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