Services/Maintenance Intervals Flashcards

A customer drives mostly 3-mile trips to work, often in sub-freezing weather, and asks which maintenance schedule applies. According to most manufacturers' guidelines, which schedule should the service consultant recommend?

Answer: The severe service schedule, because frequent short trips in cold weather are a listed severe condition

Manufacturers list frequent short trips, especially in extreme temperatures, as a severe operating condition. Under those conditions the engine rarely reaches full operating temperature, so moisture and fuel build up in the oil.

A technician changes the oil on a vehicle equipped with an oil life monitoring system but does not reset the system. What is the most likely result?

Answer: The system will keep counting down from the old value and show an early, inaccurate oil change reminder

Most oil life monitors calculate remaining life from operating conditions and do not sense fresh oil. If the system is not reset, it keeps calculating from the old oil's remaining life.

A customer is worried that their new-car warranty will be voided if they have routine oil changes done at an independent shop. What is the most accurate response?

Answer: Under the Magnuson-Moss Warranty Act, the manufacturer generally cannot deny warranty coverage just because maintenance was done elsewhere, but the customer should keep records and receipts

The Magnuson-Moss Warranty Act generally prevents manufacturers from making warranty coverage depend on using a specific shop or branded parts. However, the customer should be able to show that the required maintenance was performed.

A vehicle's maintenance schedule calls for an oil change every 7,500 miles or 12 months, whichever comes first. The customer has driven 4,200 miles in the 12 months since the last oil change. What should the service consultant tell the customer?

Answer: The oil change is due now because the time interval has been reached

With a "whichever comes first" interval, the service is due at whichever limit is reached first. Here, the 12-month limit was reached before 7,500 miles.

A customer's vehicle has an interference engine with a timing belt that is past the manufacturer's recommended replacement interval. Which explanation should the consultant give to support replacing it now?

Answer: If the belt breaks on an interference engine, the valves can hit the pistons and cause major engine damage

In an interference engine, the valves and pistons share space in the cylinder at different times. If the belt breaks, the valve timing is lost and the valves can be struck by the pistons, often bending valves and causing expensive damage.

Where is the best place for a service consultant to find the manufacturer's recommended maintenance intervals for a specific vehicle?

Answer: The owner's manual or maintenance guide, or the manufacturer's service information for that vehicle

Maintenance requirements are specific to each vehicle. The owner's manual, maintenance guide, and OEM service information list the correct intervals and services for that model, engine, and operating condition.

After rotating the tires on a vehicle whose TPMS displays the pressure at each individual wheel position, what follow-up step may be required?

Answer: Perform a TPMS sensor relearn so the system knows each sensor's new location

Systems that report pressure by wheel position need to know which sensor is at which corner. After a rotation, many vehicles require a relearn procedure so the warnings show the correct wheel.

Many manufacturers specify replacing brake fluid at regular time intervals. What is the main reason?

Answer: Glycol-based brake fluid absorbs moisture over time, which lowers its boiling point and can cause internal corrosion

DOT 3, DOT 4, and DOT 5.1 brake fluids are hygroscopic, meaning they absorb moisture. Water in the fluid lowers its boiling point, which raises the risk of brake fade under heavy use, and it can corrode internal brake components.

A multipoint inspection finds a cabin air filter that is due, front brake pads at 2 mm, and a slightly seeping valve cover gasket. How should the service consultant present these findings?

Answer: Prioritize safety first: recommend the brake pads now, then explain the other items with suggested timing

Brake pads at 2 mm are at or near the minimum and are a safety concern, so they come first. The other items should still be documented and explained with the right urgency so the customer can make informed decisions.

During a routine maintenance write-up, what should the service consultant do to make sure the customer's vehicle is fully taken care of?

Answer: Check the VIN for open safety recalls and campaigns and let the customer know about any that apply

Checking every vehicle's VIN for open recalls at write-up makes sure safety remedies get done. Manufacturers cover recall repairs at no charge to the owner at authorized dealers.