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During low speed turns/maneuvering, vehicle drivetrain feels as if it is binding or tires are scrubbing on pavement. Customer may also state that the ESP light in instrument cluster is ON or Flickering. Other customer described concerns may include, but are not limited to: • Tension in drivetrain • Vibration and load sensitive knocking from the drivetrain • Cracking noise upon acceleration from stop, while cornering or driving slowly • Shudder when cornering • Rubbing or slipping when cornering • Electronic faults in 22-Four wheel drive electronics: DTC’s 02033, 02039, 02042 or 02409 stored. The clutch disc of the differential has a remaining locking effect because of the differential control module software. This is perceived as tension in the drivetrain. Tip: The above symptoms can occur when driving with summer tires at temperatures below 7°C (45°F). In this temperature range the summer tires lose their elasticity. When fully turning the steering wheel the tire cannot correctly roll out and begins to bounce (slip – stick effect). This effect leads to the assumption of tension in the drivetrain, but the tension is in the tire wear pattern.

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ISSUE Some 2009 Escape and Mariner vehicles, equipped with 3.0L engine, may exhibit an intermittent knocking or thumping type noise from the cylinder head. After engine temperature reaches 210-220 °F (99-104 °C), the noise is typically heard from the rear of the engine as the vehicle comes to a stop. An example would be coming to a stop at the end of a highway exit ramp. Noise will continue 45-60 seconds and then diminish. Noise will occur again once engine reaches 210-220 °F (99-104 °C) and vehicle comes to another stop. ACTION Follow the Service Procedure steps to correct the condition. SERVICE PROCEDURE 1. Is noise a 45-60 second knock/thump from a hot engine as the vehicle comes to a stop? a. Yes – Go to Step 2. b. No – Stop as this procedure does not apply. Proceed with normal Workshop Manual (WSM), Section 100-04 diagnostics. 2. Using Chassis Ears, isolate the noise to Right Hand (RH) (Bank 1) or Left Hand (LH) (Bank 2) cylinder head. Noise is typically heard as 45-60 second knock/thump as the vehicle comes to a stop after engine reaches 210-220 °F (99-104 °C). a. Isolate noise to RH – Listen to the cylinder head by the variable camshaft timing (VCT) solenoid connectors. There will also be a vibration felt at the VCT solenoid connector when noise is present. Noise from RH – go to Step 3.

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APPLIED VEHICLES: All Infiniti SERVICE INFORMATION • This bulletin is to assist you in responding to customer questions about brake operation, and provides diagnostic and repair information for each item listed, if any should occur. • Most brake issues fall into the following categories: a. Brake Noise: A squeak, squeal, clunk, or groan that occurs when the brakes are applied or released. b. Brake Judder: A vibration that can be felt in the vehicle, steering wheel, or brake pedal when the brakes are applied. c. Pedal Feel: The effort needed to operate the brakes is too high or too low. SERVICE PROCEDURE 1. Verify the condition by road testing the vehicle with the customer. 2. Determine the specific brake issue based on the description in the Service Information above. 3. Follow the appropriate repair procedure(s), listed on the following pages, for your specific issue. BRAKE NOISE • Brakes can make a range of noises when applied or released. Some noises are normal and no repair action should be taken. • Use the following descriptions to identify the specific type of brake noise and the appropriate repair: Squeak noise when the brakes are cold: • Usually occurs during the first few stops in the morning. • This is a normal condition. No service action is necessary Squeak noise with the brakes at normal operating temperatures: • Refer to technical bulletins specific to the model of vehicle regarding this issue. • If there are no bulletins for the car you are working on, install OE type pads using the information listed under Brake Service on page 5 of this bulletin and the appropriate Service Manual procedures. Notes about brake pads and brake noise: Original Equipment (OE) brake pads are installed on all current Infiniti vehicles at the factory. • The OE pads use a Non-asbestos Organic (NAO) compound. The NAO material provides state of the art resistance to squeal noise. • These pads are available as service parts and must be used if replacing brake pads under the terms of the Infiniti new car warranty.

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NOTE: To ensure a proper repair and proper reimbursement, you must read this entire service bulletin before doing any work. SYMPTOM The customer may complain of uneven or rapid rear tire wear, a roaring noise from the rear, and/or a vibration at highway speeds. PROBABLE CAUSE The combination of the tires and the rear suspension geometry may cause rapid and uneven rear tire wear. Tires in an advanced stage of this diagonal or inner edge wear may cause vibration and/or a bad bearing type noise. (For more details, see TIRE INSPECTION AND QUALIFICATION on page 2). CORRECTIVE ACTION Install a rear upper control arm kit, replace the flange bolts, replace the worn tires (see the Tire Replacement Information chart on this page), and do a four-wheel alignment. TIRE INSPECTION AND QUALIFICATION Diagonal Wear Lines The tire is no longer round. There are high and low spots on the tire, worn in a diagonal pattern across the tread.

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1999-2000 SONATA SHUDDER OR VIBRATION DURING ACCELERATION DESCRIPTION: Some 1999-2000 Sonata vehicles produced prior to 4/12/00 may shudder or vibrate slightly during medium to full throttle acceleration. To correct this condition, replace both CV joints on the left and right side driveshafts. REPAIR INFORMATION: 1. Remove the drive shaft according to the 1999 or 2000 Sonata Shop Manual, Page DS- 8. Assemble the new driveshaft as shown in Steps 2-6. 2. Install the small band and boot on the joint and shaft kit. 3. Install the spider and the C-clip. 4. Add CV grease (supplied with the joint and shaft kit) to the case and boot. 5. Install the case to the spider. 6. Install the boot to the case and attach both bands on the boot, using CV joint pliers. NOTE :Use Snap-On YA3050 and YA3OBO or Blue-Point TA3050 and TA3080 or equivalent. 7. Install the axle shaft to the vehicle. 8. Test drive the vehicle and check for vibration.