
There is a lever on the lower left side of the steering wheel with multiple functions. Rotate it to the corresponding icon to activate the desired function. The high beam is not activated by rotation, but by pushing the lever forward. High beams should only be used when there are no other lighting facilities on the road and no oncoming vehicles.

I also spent some time studying my brother's C5 before. To turn on the high beams, you need to operate the left-hand stalk on the steering wheel. First, you must rotate the main light switch - that rotary knob below the left side of the steering wheel - to the low beam position. Then grab that long stalk and push it firmly forward toward the steering wheel (remember to push it all the way) until a blue high beam indicator appears on the instrument cluster. Turning it off is even simpler - just gently pull the stalk back toward your chest and it will automatically return. This car also has a convenient feature: to alert oncoming traffic at night, briefly pull the stalk toward yourself to flash the lights, and it will spring back to position automatically.

Our auto repair shop often gets this question from car owners: operating the high beams in the C5 depends on the left-hand control stalk. After ignition, locate the light knob in front of your left knee and turn it two clicks to the right to activate the parking lights and low beams. Then, grip the head of the turn signal stalk and push it forward firmly with your palm until you hear a 'click'—that means it's engaged. There are two ways to turn off the high beams: either push the stalk again for it to spring back automatically, or lightly flick the turn signal switch in the opposite direction. If you have the automatic headlight version, it’s even easier—just turn the light knob to AUTO, and pushing the stalk will still activate the high beams. The system will automatically switch based on oncoming traffic, and the blue indicator light on the dashboard means it’s active.

When I first got the car, I was confused too, but later found it simple: Keep your left hand on the steering wheel and operate the left stalk directly. With the low beams on, pinch the top of the stalk and push it forward all the way until you feel it click into place. At this point, the blue high beam indicator on the dashboard will be very noticeable. To turn it off, gently pull it back or push it again. A special reminder: Don’t mistake the fog light knob on the front of the stalk for the light switch. Also, try to avoid using high beams in the city—you might get pulled over by traffic police. Save them for remote areas.

The trick to activating the high beams on a C5 lies in the turn signal stalk. Just remember three steps: First, rotate the circular knob on the lower left side of the steering wheel to turn on the low beams. Second, firmly push the stalk forward until it locks into position. Third, check for the blue indicator light on the instrument cluster. An easily overlooked detail: When the stalk is in constant high beam mode, operating the turn signals will automatically deactivate the high beams—you'll need to reactivate them after completing the turn. Drivers wearing thick gloves in winter should note that slightly more force is required when pushing the stalk. During maintenance, remember to have the mechanic check the stalk's contact points, as older vehicles are prone to poor contact issues.

As a female car owner, I've researched that turning on the high beams in the C5 is like executing a combo move in a game: First, rotate the light switch to the second position with your left hand, which will illuminate the white backlight on the dashboard buttons. Then, use your thumb to push the plastic lever behind the left side of the steering wheel firmly toward the windshield. A crisp clicking sound confirms successful activation, and a blue high beam indicator will appear on the instrument cluster. To turn them off, simply pull the lever back gently. Remember to use the front fog lights in rainy or foggy conditions—they're controlled by a separate button near the headlights. For automatic transmission models, temporarily flashing the high beams from low beam mode just requires a gentle pull of the lever toward you, which is much more convenient than in manual transmission cars.


