The Traction Control System (TCS) enhances traction and safety by controlling engine torque and braking. When the TCS detects driving wheel slippage, it lowers engine torque and operates the brakes to prevent loss of traction.
This means that on a slick surface, the engine adjusts automatically to provide optimum power to the drive wheels, limiting wheel spin and loss of traction.
The warning light turns on when the system has a malfunction.
Refer to Warning Lights on .
| WARNING
Do not rely on the Traction Control
System (TCS) as a substitute for safe
driving:
The Traction Control System (TCS)
cannot compensate for unsafe and
reckless driving, excessive speed,
tailgating (following another vehicle
too closely), and hydroplaning
(reduced tire friction and road contact
because of water on the road surface). You can still have an accident. Use snow tires or tire chains and drive at reduced speeds when roads are covered with ice and/or snow: Driving without proper traction devices on snow and/or ice-covered roads is dangerous. The Traction Control System (TCS) alone cannot provide adequate traction and you could still have an accident. |
NOTE To turn off the TCS, press the DSC OFF switch .
TCS/DSC Indicator Light

This indicator light stays on for a few seconds when the ignition is switched ON. If the TCS or DSC is operating, the indicator light flashes.
If the light stays on, the TCS, DSC or the brake assist system may have a malfunction and they may not operate correctly. Take your vehicle to an Authorized Mazda Dealer.
NOTE
Antilock Brake System (ABS)
Dynamic Stability Control
(DSC)Starter Interlock Switch Removal/Installation [C66 M R]
1. Remove the battery cover..
2. Disconnect the negative battery cable..
3. Disconnect the starter interlock switch connector.
4. Remove the starter interlock switch from the pedal bracket.
5. Insert a new starter interlock switch into the pedal bracket hole in the direction
indicated ...
Heated Oxygen Sensor (HO2 S) Inspection [Mzr 2.0, Mzr 2.5]
HO2S Inspection
1. Connect the M-MDS to the DLC-2.
2. Switch the ignition to ON.
3. Warm up the engine to normal operating temperature.
4. Access the following PIDs using the M-MDS..
VSS (Vehicle speed)
RPM (Engine speed)
O2S12 (HO2S output voltage)
5. Drive ...
Transaxle Range (TR) Switch Inspection [FS5 A EL]
CAUTION:
Water or foreign objects entering the connector can cause a poor connection
or corrosion. Be sure not to drop water or foreign objects on the connector
when disconnecting it.
Operation Inspection
1. Perform the following procedures to inspect the TR switch.
If t ...