What is the reason why the rear door of the Cadillac CT4 cannot be opened from the inside?

2 Answers
McPaisley
07/25/25 2:22am
The reason why the rear door of the Cadillac CT4 cannot be opened from the inside is that the child lock is activated. Simply deactivate the child lock to open the door. Taking the Cadillac CT4 2021 28T Fashion model as an example: The manufacturer of this car is SAIC General Motors Cadillac, classified as a mid-size car, with an energy type of gasoline, an 8-speed automatic manual transmission, and a body type of 4-door 5-seater sedan. The car's length, width, and height are 4760mm, 1815mm, and 1421mm respectively, with a body type of 4-door 5-seater sedan, an 8-speed automatic manual transmission, a top speed of 220 km/h, and a turbocharged intake form.
Was this review help?
14
1
Share
DiSavannah
08/10/25 4:32pm
I once encountered a situation where the rear door of my Cadillac CT4 couldn't be opened from the inside, which was particularly frustrating. That time when I drove to pick up my child from school, my kid kept pulling the door handle in the back seat but couldn't open it, getting really anxious. Later I learned that the child safety lock was activated – this feature is designed to prevent children from accidentally opening doors, and can only be deactivated by unlocking it from the outside using a key or button. Other common causes include jammed door lock mechanisms, such as loose or broken handle cables; or electronic system failures, like a dead battery causing central locking to malfunction, or winter freezing or debris stuck in the door gap. Checking it yourself is simple: first see if the child lock is enabled, then try whether the rear door can be opened from the outside; if the handle feels loose when pulled, it might be a cable issue. For regular maintenance, I recommend periodically cleaning door locks to avoid debris buildup, and ideally getting a professional inspection every six months to prevent last-minute safety issues.
Was this review help?
18
4
Share
Expand All
More Forum Discussions

What are the major types of new energy vehicles?

New energy vehicles include three major types: hybrid electric vehicles, pure electric vehicles, and fuel cell electric vehicles. New energy vehicles refer to vehicles whose power source does not solely rely on internal combustion engines. Their most notable feature is the use of electric motors for propulsion, with the power supplied to the motors coming from batteries. The methods for charging these batteries include built-in generators, external charging ports, solar energy, chemical energy, and nuclear energy. New energy vehicles consist of power batteries, vehicle chassis, body, and vehicle electrical systems. As a crucial component of electric vehicles, power batteries are divided into battery modules, battery management systems, thermal management systems, and electrical and mechanical systems.
18
3
Share

How many liters of transmission oil does the Buick LaCrosse require?

Buick LaCrosse requires approximately 7.1 liters of transmission oil. The correct procedure during an oil change is to drain the oil completely from the drain hole and then add 5 liters of oil. Taking the 2021 Buick LaCrosse as an example, it belongs to the mid-size car category with the following dimensions: length 5026mm, width 1866mm, height 1459mm, wheelbase 2905mm, fuel tank capacity 55 liters, and curb weight 1535kg. The 2021 Buick LaCrosse features a McPherson strut front suspension and a multi-link independent rear suspension. It is equipped with a 1.5L turbocharged engine, delivering a maximum horsepower of 169PS, maximum power of 124kW, and maximum torque of 250Nm, paired with a 9-speed automatic transmission.
20
2
Share

How to Measure the Condition of a Car Battery?

Methods to measure the condition of a car battery include: 1. Visual inspection to check for deformities, bulges, leaks, cracks, burns, or oxide seepage at screw connections; 2. Load testing; 3. Using a multimeter for measurement. A car battery, also known as a storage battery, works by converting chemical energy into electrical energy. Maintenance methods for car batteries include: 1. Avoid parking the car in open parking lots for extended periods; if long-term parking is necessary, remove the battery; 2. Avoid repeatedly starting the vehicle without intervals; 3. Start the car periodically to keep the battery charged; 4. Regularly inspect battery components and connection lines; 5. Clean the battery terminals periodically and apply specialized grease to protect the wiring harness; 6. Avoid using car electronics after the engine is turned off.
4
5
Share

What does a car tire pressure of 220kpa mean?

Car tire pressure of 220kpa means that the designed value of the tire pressure is 220kpa. During normal driving, the tire pressure needs to be inflated to 220kpa to ensure the designed performance of the car. Different cars may have slightly different designed tire pressures. 220kpa stands for 220 kilopascals, where kpa refers to kilopascals, a unit of pressure. Tire pressure refers to the air pressure inside the tire, which is like the blood pressure of the car. The level of tire pressure plays a crucial role in the performance and power of the car. Tire pressure is an indicator of the car's load capacity, and the size of the car's load depends on the level of tire pressure. Tires are circular elastic rubber products mounted on metal rims, used on various vehicles or machinery to support the vehicle body, absorb external shocks, achieve contact with the road surface, and ensure the driving performance of the vehicle.
7
0
Share

How to Drive Out When the Tire is Against the Curb?

The methods to drive out when the tire is against the curb are: 1. Start slowly and gently steer the wheel towards the middle of the road; 2. Release the vehicle's handbrake, get out of the car, and push it forward. The potential damages to the car from hitting the curb include: 1. Direct contact between the tire and the curb can cause the sidewall cords to break or bulge if not handled properly; 2. If the curb is too high, it may scratch or dent the wheel rim, affecting aesthetics and even causing deformation; 3. The suspension and various rods are prone to deformation; 4. If the curb is too high, it may lead to undercarriage scraping, oil pan leakage, or damage to the front bumper; 5. Glass on the curb can damage the tires.
15
1
Share

What does China V mean?

China V refers to the National Fifth Stage Emission Standard for Motor Vehicles, also known as the China V standard. The methods to check a vehicle's emission standard are: 1. Check the motor vehicle conformity certificate; 2. Look for the vehicle packing list; 3. Log in to the motor vehicle exhaust pollution supervision and management website; 4. Check the back of the environmental protection label on the car's front windshield; 5. Bring the vehicle registration form to the vehicle management office for inquiry. The main pollutants emitted by vehicles include hydrocarbons, nitrogen oxides, carbon monoxide, and particulate matter. Through the application of technologies such as the active layer of catalytic converters, secondary air injection, and exhaust gas recirculation systems with cooling devices, these vehicle emission pollutants are controlled and reduced to levels below the specified standards.
16
2
Share
Cookie
Cookie Settings
© 2025 Servanan International Pte. Ltd.