Two problems related to front suspension control arm have been reported for the 2004 Acura TL. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Acura TL based on all problems reported for the 2004 TL.
The aftermarket ultra-power k500117 {#51210sepa01} (economy) ball joint represents a severe safety hazard. It can result in separation of the lower control arm. The jpg ultra-power k500117 {#51210sepa01} (economy) after failure shows the lower control bushing ripped from the llower control arm. Jpg beck/arnley 1027932 bushing close-up is identical design as the Acura oem part. This bushing is pressed into the control arm from the top. From the factory, once the ball joint is in place, the retainer nut holds both the ball joint and bushing securely in the control arm. The factory flanged nut is larger than the bushing diameter as to ensure contact with the control arm underside. Observe the nut in . Jpg ultra-power k500117 {#51210sepa01} (economy)'s. It is a standard lock nut. The diameter is too small. It makes no contact with the control arm, but rather seats directly to the bushing. The bushing is only pressed in, and will eventually pull out. As can be seen in the after failure picture, there is no way the nut could hold the ball joint and bushing in place as Acura (Honda) designed it to do. Please look at the nut of the moog k500117 as an example of a correctly designed ball joint and nut, and how the nut is flanged. This is the correct style nut as it will make contact with the lower control arm instead of only the pressed in bushing. It can be easily seen in the second picture that the nut is clearly smaller than the control arm bushing. Order number 82540335 through rock auto was purchased on 4/12/2018. The ball joint, bushing and nut simply pulled out. The lower control arm is destroyed, as is the cv axle. Damage to the fender and fender skirt as well. It is fortunate this failure happened while turning into a parking lot rather than at highway speeds just moments before.
While driving the car on highway, right front ball-joint broke in half with no warning or reason. Right front tire became perpendicular to the vehicle. Wife and child were in vehicle with complete loss of control of vehicle. The ball joint was absolutely defective and Acura refused to assist in repair, claiming no responsibility. I own 2 Acura and will never buy Honda again.