2025 Porsche Macan Electric 4S — runs hotter sitting in traffic than moving
2025 Porsche Macan Electric 4S, about 14,500 miles. Coolant temp climbs while idling with the A/C on, then drops back down once I'm moving. Coolant is full and…
Cooling System
Repairs & Ownership
2021 Honda CR-V EX-L — coolant level slowly drops with no puddle
2021 Honda CR-V EX-L, about 78,000 miles. Reservoir moves from full to low over a few weeks. No puddle, no obvious hose leak, and the oil looks normal. Is a pr…
2013 Toyota Prius — a/C is cold on the highway but warm at stoplights
2013 Toyota Prius Three, about 155,500 miles. The A/C works well with road speed but gets noticeably warmer at long lights, then cools again almost immediately…
2025 BMW M3 — coolant slowly disappears without an obvious leak
2025 BMW M3 Competition, about 10,500 miles. The reservoir goes from full to low over several weeks.
2023 Acura Integra — coolant slowly disappears without an obvious leak
2023 Acura Integra A-Spec, about 23,000 miles. The reservoir goes from full to low over several weeks. No puddle, oil looks normal, and I cannot find dried coo…
2025 Honda Civic — temperature climbs in traffic but drops once moving
2025 Honda Civic Sport Touring Hybrid, about 19,500 miles. Coolant temperature rises while sitting with the A/C on, then drops once the car is moving. Coolant…
ShopRoadieCommunity StarterMay 18, 20262025 Honda Civic Sport Touring HybridOrlando2 replies0 helpful
2014 Ford Mustang — blower works on some speeds but not others — buyer question from Austin
Cabin fan works normally on certain settings and then cuts out or changes speed unpredictably on others. Before replacing the blower motor, what should be chec…
2013 Infiniti G37 — blower works on some speeds but not others — buyer question from Northern Virginia
2013 Infiniti G37 xS, about 67,500 miles. Cabin fan works normally on certain settings and then cuts out or changes speed unpredictably on others. Before repla…
CamberSeller986Community StarterMay 18, 20262013 Infiniti G37 xSNorthern Virginia11 replies0 helpful
2019 Ram 2500 — a/C is cold on the highway but warm at stoplights
2019 Ram 2500 Cummins, about 79,000 miles. The A/C works well with road speed but gets noticeably warmer at long lights, then cools again almost immediately on…
1987 Porsche 911 — coolant slowly disappears without an obvious leak
1987 Porsche 911 Carrera 3.2, about 153,500 miles. The reservoir goes from full to low over several weeks. No puddle, oil looks normal, and I cannot find dried…
2023 Nissan Z — coolant slowly disappears without an obvious leak
2023 Nissan Z Performance, about 50,000 miles. The reservoir goes from full to low over several weeks. No puddle, oil looks normal, and I cannot find dried coo…
2019 Lexus GS — a/C is cold on the highway but warm at stoplights — anyone dealt with this recently?
2019 Lexus GS 350, about 62,000 miles. The A/C works well with road speed but gets noticeably warmer at long lights, then cools again almost immediately once m…
Anyone else: Coolant level slowly drops with no puddle
Reservoir moves from full to low over a few weeks. No puddle, no obvious hose leak, and the oil looks normal. Is a pressure test the next logical step or is th…
2019 Audi S4 — temperature climbs in traffic but drops once moving
2019 Audi S4 Premium Plus, about 70,000 miles. Coolant temperature rises while sitting with the A/C on, then drops once the car is moving. Coolant level looks…
2023 Rivian R1T — a/C is cold on the highway but warm at stoplights
2023 Rivian R1T Quad-Motor, about 39,500 miles. The A/C works well with road speed but gets noticeably warmer at long lights, then cools again almost immediate…
RoadTripEnthusiastCommunity StarterMay 15, 20262023 Rivian R1T Quad-MotorOrange County1 reply0 helpful
2024 Polestar 2 — blower works on some speeds but not others — second opinion before I spend money
2024 Polestar 2 Long Range Dual Motor, about 36,000 miles. Cabin fan works normally on certain settings and then cuts out or changes speed unpredictably on oth…
TrackPilot512Community StarterMay 14, 20262024 Polestar 2 Long Range Dual MotorDetroit5 replies0 helpful
1972 Chevrolet C10 — coolant slowly disappears without an obvious leak
The reservoir goes from full to low over several weeks. No puddle, oil looks normal, and I cannot find dried coolant around the hoses. Is a pressure test the n…
Anyone else: Coolant level slowly drops with no puddle
2023 Mercedes-AMG C43 4MATIC, about 8,200 miles. Reservoir moves from full to low over a few weeks. No puddle, no obvious hose leak, and the oil looks normal.…
2018 Chevrolet Tahoe — blower works on some speeds but not others
Cabin fan works normally on certain settings and then cuts out or changes speed unpredictably on others. Before replacing the blower motor, what should be chec…
2025 Hyundai Tucson Hybrid Limited — question: Runs hotter sitting in traffic than moving
2025 Hyundai Tucson Hybrid Limited, about 151,000 miles. Coolant temp climbs while idling with the A/C on, then drops back down once I'm moving. Coolant is ful…
PistonDad44Community StarterMay 13, 20262025 Hyundai Tucson Hybrid LimitedOrange County11 replies0 helpful