Lentz USA Auto Service Centers


We are more than just oil changes! We can service any of your car's electrical problems as well. Just contact your nearest LentzUSA Automotive Service Center for more details.

Electric power steering (EPS or EPAS) is designed to use an electric motor to reduce effort by providing steering assist to the driver of a vehicle. Sensors detect the motion and torque of the steering column, and a computer module applies assistive torque via an electric motor coupled directly to either the steering gear or steering column. This allows varying amounts of assistance to be applied depending on driving conditions. The system allows engineers to tailor steering-gear response to variable-rate and variable-damping suspension systems achieving an ideal blend of ride, handling, and steering for each vehicle.[9] On Fiat group cars the amount of assistance can be regulated using a button named "CITY" that switches between two different assist curves, while most other EPS systems have variable assist, which allows for more assistance as the speed of a vehicle decreases and less assistance from the system during high-speed situations. In the event of component failure, a mechanical linkage such as a rack and pinion serves as a back-up in a manner similar to that of hydraulic systems. Electric power steering should not be confused with drive-by-wire or steer-by-wire systems which use electric motors for steering, but without any mechanical linkage to the steering wheel.
Electric systems have a slight advantage in fuel efficiency because there is no belt-driven hydraulic pump constantly running, whether assistance is required or not, and this is a major reason for their introduction. Another major advantage is the elimination of a belt-driven engine accessory, and several high-pressure hydraulic hoses between the hydraulic pump, mounted on the engine, and the steering gear, mounted on the chassis. This greatly simplifies manufacturing and maintenance. By incorporating electronic stability control electric power steering systems can instantly vary torque assist levels to aid the driver in evasive manoeuvres.
The first electric power steering systems appeared on the Honda NSX in 1990, the FIAT Punto Mk2 in 1999, the Honda S2000 in 1999, and on the BMW Z4[10] in 2002. Today a number of manufacturers use electric power steering.
Reviews in the automotive press often comment that certain steering systems with electric assist do not have a satisfactory amount of "road feel". Road feel refers to the relationship between the force needed to steer the vehicle and the force that the driver exerts on the steering wheel. Road feel gives the driver the subjective perception that they are engaged in steering the vehicle. The amount of road feel is controlled by the computer module that operates the electric power steering system. In theory, the software should be able to adjust the amount of road feel to satisfy drivers. In practice, it has been difficult to reconcile various design constraints while producing a more pronounced road feel[citation needed]. The same argument has been applied to hydraulic power steering as well.


The following products, sold and installed on non-commercial vehicles by LENTZ USA, are accompanied by a limited warranty. Please contact the store manager for more details.

Should a warranted part fail to perform during the time of ownership, simply return to any LENTZ USA Service Center with your receipt for warranted repairs. See the back of your receipt for warranty details.

Lansing Store Hours
Mon-Fri: 7:30am - 6:00pm
Saturday: 7:30am - 4:00pm
Closed Sunday

Grand Rapids Store Hours
Mon-Fri: 7:30am - 6:00pm
Saturday: 7:30am - 3:00pm
Closed Sunday

Client Testimonial

I'm a stay at home dad with three kids so when our van needed work awhile back it meant we were going to be stranded for the last few days of summer before my sons first day of kindergarten...

Tom Wendt

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