I have a 2003 Buick Rendezvous. After the dealer did a brake job,
the red "brake" warning light on the dash came on, along
with an audible alarm. The dealer said they didnít cause it, donít
know why itís doing it and donít know how to fix it. They said I
could disconnect the wire to the radio speaker but they would not do
this for me.
Really? Even without hearing both sides of the story, itís hard
for me to believe an authorized dealer would suggest a car owner
ignore a brake warning light and audible warning signal. Beyond
this, how a dealer could tell you they donít know what or why the
warning light is on without checking the car is just as
there are three reasons the brake warning light comes on ó low
brake fluid level in the reservoir, an engaged parking brake, or a
problem with the hydraulic brake system.
should have checked fluid level in the brake master cylinder
reservoir, checked that mechanical components of the parking brake
or its electrical switch are not sticking, and, most important,
scanned for any brake system, ABS or traction control system (TCS)
For the dealer
to have serviced the brake system, then deny causing the brake
warning light to illuminate without any investigation and to suggest
that you ignore the light and disable the audible warning is,
frankly, almost unbelievable.
Q: My daughter
has a 2004 Saturn Ion that has a problem starting when overnight
temperatures drop to zero or below. She turns the key and it just
goes "click, click, click," or starts to turn over then
stops. She lets it sit for 15-20 minutes and then it starts right
away. During warm weather it starts fine. Can you help?
A: Check the
battery terminals, connections and cables. The "click, click,
click" is typically a sign that the battery is weak or
connections are so poor that not enough amperage reaches the starter
motor to crank over the engine. The electrical resistance through
poor connections during several starting attempts may actually warm
up the connections and battery enough to enable an engine start.
battery itself. An aged battery operating in subzero temperatures
may well be the culprit.
granddaughter has a 2008 Chevy Uplander with 65,500 miles. In early
January during a nice spell of weather that exposed some of our
famous potholes, I hit one. Shortly after that the "Service ABS
System," "Service Traction System" and "Service
Stability System" warning lights came on in a blinking
rotation. Because the weather has been so bad recently, Iím hoping
to get some advice on what to look for before crawling under the
car. The brakes work fine and Iím still driving the car.
A: Have a shop
plug in a scan tool and identify the specific C-series DTC fault
codes relating to this issue. The most likely cause is a damaged
wheel speed sensor or harness. The information gathered by these
sensors and fed to the electronic brake control module determines if
ABS or TCS function is appropriate. If the signal from one or more
wheel-speed sensors is absent or inaccurate, a fault code is
generated, the systems are disabled and warning lights illuminate.
wonít have to crawl under the car. The scan tool should identify
which wheel speed sensors are at fault. You can access the sensors
and their harnesses by removing the specific wheel in question.