The rear drive unit in older Teslas model X and S have a costly design problem. Many Tesla Model S and Model X vehicles made from 2012 to 2020 have the Large Drive Unit (LDU), which has a guaranteed leaking rotor coolant seal. This seal, located around the electric motor rotor shaft, will fail and allow coolant to seep into the motor. Over time, every one of these will leak. Tesla tried various fixes to prevent this, then introduced ‘Revision U’ of the LDU in late 2022. This versionor reroutes coolant away from the rotor while continuing to cooling the inverter, stator, and gearbox through the flyover tube. This is a good and permanent fix. This issue impacts ALL rear-wheel-drive models (including non-performance RWD ones) and all Performance (P-series) dual-motor variants. The non-performance dual-motor models use a different rear unit without this flaw. While Performance and non-performance LDUs differ in their inverters, they share the same leaky seal. Only the NON-PERFORMANCE DUAL-MOTOR vehicles have the ‘small drive unit’ that’s immune to this. Newer Model 3/Y and the latest S/X do not leak coolant into the stator. If you own an impacted vehicle, make it a habit to inspect the encoder (or speed) sensor for signs of blue coolant buildup. It’s a straightforward inspection. If yours is leaking, act quickly to get it fixed before the motor floods and the car becomes undrivable. We perform this inspection for $49. Pre Revision U LDU’s can be modified to have the Revision U fix. This is known as the coolant delete. In fact it does not eliminate cooling for the whole Large Drive Unit, it only by passes the rotor cooling. Contact Philip at PROFIX Auto Repair for details and pricing. Don’t delay getting your LDU checked for $49.

Discover expert auto electrical services at PROFIX Auto Repair in Norman, OK. Trust our skilled team for reliable solutions. Schedule an online appointment now.

Discover top-notch auto repair and maintenance at PROFIX Auto Repair in Norman, OK. Trust our expertise—schedule an online appointment today!

If you’re shopping for a used Tesla in Norman, Oklahoma, a professional pre-purchase inspection is one of the smartest steps you can take before buying. At PROFIX Auto Repair, we provide thorough Tesla pre-buy inspections to help drivers avoid unexpected repairs and make confident decisions. Electric vehicles like Tesla require a different approach than traditional gas-powered cars. Our experienced technicians understand Tesla-specific systems and know exactly what to look for during a pre-purchase inspection. We carefully evaluate: -Suspension, steering, and braking systems -Tire condition and uneven wear patterns -Underbody and structural components -Thermal Cooling/Heating systems and high-voltage safety checks -Warning messages, fault indicators, and electronic issues -Signs of prior collision damage or improper repairs Many problems with used Teslas aren’t obvious during a quick test drive. Our inspection helps uncover hidden issues that could lead to costly repairs down the road, especially important when buying from a private seller or out-of-area dealer. Located right here in Norman, OK, PROFIX Auto Repair proudly serves Tesla owners throughout Cleveland County and the surrounding area. Whether you’re purchasing a Model 3, Model Y, Model S, Model X, or Cyber Truck our goal is to give you clear, honest information before you buy. Before you commit to a used Tesla, schedule a Tesla pre-purchase inspection at PROFIX Auto Repair in Norman, Oklahoma—and buy with confidence.

Tesla Alignments: Protecting Your Tires from Uneven Wear at PROFIX Auto RepairTesla owners love the performance, but many notice tires wearing out faster than expected—especially uneven wear on the inner edges of the rear tires. This is common on Model 3, Model Y (including the newer 2026 Juniper models), Model S, and Model X. Common causes include: Heavy battery pack adding significant weight & Instant electric torque stressing tires during acceleration and regen braking. Factory alignment specs (often aggressive negative rear camber for better handling and stability) that accelerate inner-edge wear—even when "within spec." Everyday factors like potholes, curbs, or mileage causing slight drifts in toe, camber, or caster. The result? Premature bald spots on the inside, reduced tread life, noisier rides, lower efficiency, and safety concerns. A professional four-wheel alignment makes a big difference. At PROFIX Auto Repair, we use state-of-the-art equipment to check and adjust your Tesla to optimized specs—balancing performance, handling, and longer tire life. Many customers see dramatically reduced wear and better range after our service. Watch for these signs your Tesla needs attention: Uneven or rapid tire wear (especially inner rear edges) -Pulling to one side -Off-center steering wheel -Vibrations or unusual tire noise Don't let misalignment chew through another expensive set of tires. Schedule your Tesla alignment today at PROFIX Auto Repair—we're EV-friendly and ready to keep you safe on the road! Call us at 405-310-2279 or Click Here to book. Your Tesla deserves expert care. PROFIX Auto Repair – Trusted Service for Teslas & All Vehicles.

As the temperatures drop and winter sets in, many drivers start experiencing frustrating car issues that seem to appear out of nowhere. At PROFIX Auto Repair, we've seen a surge in these cold-weather-related problems every year. The good news? Most of them are preventable with a little preparation and maintenance. In this post, we'll cover the most common issues our customers bring to us during the winter months and share tips on how to avoid them. 1. Dead or Weak Battery - Cold weather is the number one enemy of car batteries. Low temperatures can reduce a battery's power by up to 50-60%, making it struggle to start your engine—especially if it's already a few years old. Tip: Get your battery tested for free at PROFIX—we can tell you if it's time for a replacement before you're stranded. 2. Low Tire Pressure - For every 10°F drop in temperature, your tires can lose about 1 PSI of air pressure. Under inflated tires reduce traction, fuel efficiency, and increase the risk of blowouts on icy roads. Tip: Check your tire pressure monthly (including the spare!) and inflate to the manufacturer's recommended levels. 3. Thickened Engine Oil - In extreme cold, conventional oil can thicken, making it harder for your engine to turn over and potentially causing unnecessary wear during startup.firestonecompleteautocare.com Tip: Switch to a lower-viscosity synthetic oil rated for winter conditions. An oil change at PROFIX can make a big difference. 4. Frozen Door Locks and HandlesMoisture gets into locks and seals, then freezes solid, leaving you locked out of your own car. Tip: Apply a silicone-based lubricant to locks and rubber seals to prevent freezing. 5. Wiper Blade Issues - Wiper blades can freeze to the windshield, become brittle, or get damaged by ice buildup, streaking or failing when you need clear visibility the most. Tip: Replace old blades with winter-specific ones and lift them off the glass when parking in snow. 6. Reduced Traction and Getting Stuck - Snow and ice turn roads into skating rinks, leading to skids or wheels spinning without forward progress. Tip: Consider winter tires for better grip, and keep a traction aid like kitty litter in your trunk.Don't Wait Until It's Too Late!Many of these issues can be caught early with a simple winter maintenance check. At PROFIX Auto Repair, our experienced technicians are here to help keep your vehicle running smoothly all season long. Schedule your winter prep appointment today—call us or book online. Stay safe and warm out there! PROFIX Auto Repair – Your Trusted Local Experts for All Seasons

Well, Norman, Oklahoma decided to sprinkle a little Christmas magic on us in December, and by “sprinkle” we mean actual snowflakes the size of tortillas! While the kids are building wonky snowmen and half the town is attempting donuts in the Dollar General parking lot, we’re over here thinking about your poor car shivering outside.Here’s the quick, fun PROFIX Snow-Day Survival Guide:Slow Your Roll, Cowboy – Black ice doesn’t care how tough your truck looks. Ease off the gas, increase following distance, and pretend you’re driving Miss Daisy. Brakes Aren’t Suggestions – Pump those brakes gently like you’re flirting, not stomping like you just saw your ex at Target. Wipers Up, Problems Down – Before the snow hits next time, flip your wipers up. No more doing the ice-chip shimmy at 6 a.m. with a cereal bowl in one hand. Battery Hates the Cold More Than Your Mother-in-Law Hates Your Cooking – Cold weather can sap 50% of your battery’s cranking power. If your car’s been starting slower than a Monday morning, swing by PROFIX. We’ll test it faster than you can say “hot cocoa.” Tires Matter, Bro – If your tread looks slicker than the roads, it’s time for new shoes. All-seasons are cute until they’re ice-skating. Bonus laugh: Yes, someone already brought us a car this morning because “the traction control light looks like a sad face.” It’s okay, we speak fluent car emotions.Stay warm, stay safe, and if your car starts making noises that sound like it’s auditioning for a polar bear documentary, you know where to find us—we’re the warm shop with the coffee that doesn’t taste like regret.Drive slow, Norman. We love you (and your car) too much to see either of you in a ditch.— The PROFIX Crew

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Expert heating & A/C repair at PROFIX Auto Repair in Norman, OK. Trust our team for prompt, reliable service. Schedule an online appointment now.