Tech Tips

Engine Stalls with Daytime Running Lights On

Vehicle: 2015 Jeep Grand Cherokee, 4WD, V6-3.6L, Automatic Transmission/Transaxle

Mileage: 139,637

Problem: The customer brought the Jeep in because the engine stalls when he turned the daytime running lights (DRLs) on. He also mentioned that if he pulls the handbrake (which disables DRLs), the engine stays running.

Corolla MIL On – DTC P0441

Vehicle: 2018 Toyota Corolla, L4-1.8L (2ZR-FAE), Manual Transmission/Transaxle

Mileage: 368,473

Problem: An illuminated malfunction indicator light (MIL) was why this Corolla was brought to the shop. The owner said the car ran fine.

2010 Volvo
2010 Volvo

Volvo XC60 HVAC Blower is Always On

Vehicle: 2010 Volvo XC60, AWD, L6-3.0L Turbo VIN 99 B6304T2, Automatic Transmission/Transaxle

Mileage: 168,495 miles

Problem: The Volvo owner’s concern was that the HVAC blower ran all the time, even with the key in the OFF position. He had to pull the blower fan fuse to keep the battery from going dead.
 

Tech-Assist Quick Tip
Tech-Assist Quick Tip

Forester Troubles - Long Crank Time, Intermittent Stalling, MIL On

Vehicle: 2018 Subaru Forester F4-2.5L DOHC, Automatic Transmission/Transaxle

Mileage: 98,955 miles

Problem: The Subaru was dropped off at the shop because the malfunction indicator light (MIL) was on, and when starting each morning, the engine cranked too long and would occasionally stall after starting. For the rest of the day, the engine would start and run fine.
 

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Super Mario Diagnostics
Super Mario Diagnostics

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2015 BMW 228i No Comms - Rear Electronics Module Reprogramming


Mario Rojas (aka Super Mario Diagnostics) has been repairing cars since 2013 and sharing his repairs on YouTube for the last five years. Fitting to his username, he primarily focuses on diagnostics and troubleshooting – and he’s garnered quite a following doing so. He currently has over 49 thousand subscribers on YouTube and over five million total video views.

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