Additional Brake Light. Porsche 991 2014-19  ❭  99163119103

Additional Brake Light.
The Genuine Porsche Additional Brake Light 99163119103 is a replacement high-level brake light designed for compatible Porsche vehicles.

Fits:

• Porsche 991.1 Carrera C2 3.4L (350 Bhp) 2014-16
• Porsche 991.1 Carrera C2S / GTS 3.8L (400/430 Bhp) 2014-16
• Porsche 991.1 Carrera C4 3.4L (350 Bhp) 2014-16
• Porsche 991.1 Carrera C4S / GTS 3.8L (400/430 Bhp) 2014-16
• Porsche 991.1 R 4.0L (500 Bhp) 2016
• Porsche 991.1 GT3 3.8L (475 Bhp) 2014-16
• Porsche 991.1 GT3 RS 4.0L (500 Bhp) 2015-16
• Porsche 991.2 Turbo Coupe 3.8L (540 Bhp) 2017-19
• Porsche 991.2 Turbo S Coupe 3.8L (580 Bhp) 2017-19
• Porsche 991.2 Turbo Cabriolet 3.8L (540 Bhp) 2017-19
• Porsche 991.2 Turbo S Cabriolet 3.8L (580 Bhp) 2017-19
• Porsche 991.2 GT2 RS 3.8L PDK (700 bhp) 2018-19  

Diagram Ref No 8

Also commonly known as the third brake light or centre high-mounted stop lamp, this additional brake light illuminates when the brake pedal is pressed, providing drivers behind the vehicle with an extra, highly visible indication that the Porsche is slowing or stopping.

A correctly functioning additional brake light is important for road safety and visibility. Replacement may be required if the original lamp has stopped illuminating correctly, developed failed LED sections, suffered water ingress, become cracked or has sustained physical damage.

What This Product Does:
The additional brake light works alongside the vehicle's main rear brake lamps.

When the driver presses the brake pedal, the light illuminates to provide an additional warning to following road users.

Its primary functions include:

• Providing an additional brake warning signal
• Improving visibility when braking
• Helping following drivers recognise braking more quickly
• Supplementing the main left and right brake lamps
• Improving vehicle visibility in traffic
• Supporting the vehicle's complete exterior lighting system

Its elevated position can make the braking signal easier to see, particularly when vehicles are travelling closely together.

Symptoms Of Wear Or Failure:
Common signs that the additional brake light may require replacement include:

• Brake light does not illuminate
• Only part of the light illuminates
• Failed LED sectionsIntermittent operation
  
• FlickeringReduced brightness
  
• Uneven illumination
• Moisture or condensation inside the lamp
• Cracked lens or housing
• Physical impact damage
• Damaged mounting points
• Loose lamp assembly
• Electrical warning message where applicable

The cause should be diagnosed before replacement, particularly if the entire light has stopped operating.

Why Replacement Matters:
A correctly operating additional brake light helps other road users recognise when the Porsche is braking.

Replacing a failed or damaged unit helps:

• Restore full brake-light visibility
• Improve warning to following drivers
• Restore even and consistent illumination
• Correct failed or intermittent LED sections
• Prevent water ingress through a damaged lamp
• Restore secure factory-style fitment
• Maintain the appearance of the vehicle
• Keep the exterior lighting system operating as intended

Because brake lights are safety-related components, known faults should be repaired promptly.

Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.

99163119103

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