Monday, 18 November 2019

2015 Porsche Cayenne GENERAL INFORMATION Anti-Lock Brake Safety Precautions

GENERAL INFORMATION
Anti-Lock Brake Safety Precautions
* PLEASE READ THIS FIRST *
This article is intended for general information purposes only. This information may
not apply to all makes and models. If vehicle is equipped with Anti-Lock Brake System
(ABS), refer to appropriate ANTI-LOCK BRAKE SYSTEM article in the BRAKES section for
description, operation, depressurizing, testing, system bleeding, trouble shooting and
servicing of specific system.
ANTI-LOCK BRAKE SAFETY PRECAUTIONS
 NEVER open a bleeder valve or loosen a hydraulic line while ABS is pressurized.
 NEVER disconnect or reconnect any electrical connectors while ignition is on.
Damage to ABS control unit may result.
 DO NOT attempt to bleed hydraulic system without first referring to the
appropriate ANTI-LOCK BRAKE SYSTEM article in the BRAKES section.
 Only use specially designed brake hoses/lines on ABS equipped vehicles.
 DO NOT tap on speed sensor components (sensor, sensor rings). Sensor rings must be
pressed into hubs, NOT hammered into hubs. Striking these components can cause
demagnetization or a loss of polarization, affecting the accuracy of the speed
signal returning to the ABS control unit.
 DO NOT mix tire sizes. Increasing the width, as long as tires remain close to the
original diameter, is acceptable. Rolling diameter must be identical for all 4
tires. Some manufacturers recommend tires of the same brand, style and type.
Failure to follow this precaution may cause inaccurate wheel speed readings.
 DO NOT contaminate speed sensor components with grease. Only use recommended
coating, when system calls for an anti-corrosion coating.
 When speed sensor components have been removed, ALWAYS check sensor-to-ring air
gaps when applicable. These specifications can be found in each appropriate
article.
 ONLY use recommended brake fluids. DO NOT use silicone brake fluids in an ABS
equipped vehicle.
 When installing transmission devices (CB's, telephones, etc.) on ABS equipped
vehicles, DO NOT locate the antenna near the ABS control unit (or any control
unit).
 Disconnect all on-board computers, when using electric welding equipment.
 DO NOT expose the ABS control unit to prolonged periods of high heat (185 °F/85°
C for 2 hours is generally considered a maximum limit).
WARNING: Failure to depressurize ABS could lead to physical injury.
2015 Porsche Cayenne
GENERAL INFORMATION Anti-Lock Brake Safety Precautions
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