Dashboard lights flashing like christmas.

I have a 2007 tundra with the 4.7 liter engine. I drove it to work yesterday with no problems,this morning got in it and these lights were on 4 lo flashing,vsc off flashing,check engine solid,and traction control off,and also it seems to be in limp mode.This truck I bought used with 82000 miles on it now it has 127000.The Carfax said that the air pumps were replaced around 45000,can they be bad again? Any thoughts Thanks, Oh yeah I did take off battery cables but didn't help.

 

Everyone that owns a vehicle needs to own a scanner.

They are cheap and well worth the money

 

It was done at a Toyota dealership.

 

I'm no mechanic but I had this happen with a bad wire going to the abs sensor just a thought.

 

Ok got it scanned its saying secondary air injection system switch stuck open bank 2.These are the two switches on both sides of the engine or the ones under the manifoil?Will the Hewitt bypass work for this or not?This is going to cost me a lot of bucks aint it?

 

I just found this.


Toyota Tundra Wheel Speed Sensor Replacement Cost
Know what price you should pay to get your vehicle fixed.

• Estimator
• /
• Toyota
• /
• Tundra
• /
• Wheel Speed Sensor Replacement Cost

The average cost for a Toyota Tundra wheel speed sensor replacement is between $1,121 and $1,762. Labor costs are estimated between $42 and $54 while parts are priced between $1079 and $1708. Estimate does not include taxes and fees.
Note about price: This service is typically done as part of a bigger, more expensive repair, so the estimate you see above may not represent your total cost. Some of these bigger related repairs are listed in the table below. Talk with a RepairPal Certified shop to learn which repairs may be right for you.
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What is an ABS wheel speed sensor?
The wheel speed sensor is the primary data source for the ABS system. In order for the anti-lock brake (ABS) control module to react to driving conditions, wheel speed sensors (WSS) are placed on all four wheels, and constantly transmit the speed of each wheel to the ABS control module. They are mounted in the hub, close to the brake calipers, where they can monitor how fast the axle is turning.

How does the ABS wheel speed sensor work?
They are mounted in the hub, close to the brake calipers, where they can monitor how fast the axles are turning. All four WSS work in unison by providing four independent signals to the ABS control module, which allows the control module to correct for slipping if one or more wheels stop rotating. This action is responsible for highly reduced braking distances in slippery conditions.

What are the symptoms related to a bad ABS wheel speed sensor?
In the event that a wheel speed sensor fails, the ABS, traction control system (TCS) and manufacturer specific stability control system lights will illuminate, informing the driver that the systems are disabled. The vehicle will be more prone to tire slip, and normal driving patterns may need to be adjusted to correct for the loss of computer control. On older vehicle's, the speedometer can be affected, causing illumination of the check engine light as well.

Can I drive with a ABS wheel speed sensor problem?
The vehicle can be driven with these warning lights on, since failure of the ABS or TCS does not disable the vehicle, but safety is a concern as drivers become accustomed to the road manners of their vehicle's. If hard braking that is normally controlled by the ABS control module is necessary, a collision may occur. We do recommend towing the vehicle to a repair facility if braking feels unusual under light or normal driving conditions.

How often do ABS wheel speed sensors need to be replaced?
Wheel speed sensors are notorious for failure, since they are housed on the wheel hub, near the road surface. This means the sensor and electrical connections are subject to dust, debris, precipitation, salt, and road hazards. Aside from that, brake dust and road grime are known to accumulate around the magnetic sensor, causing interference, and preventing proper readings. If the ABS and TCS lights are active, there is a very good chance you have a faulty wheel sensor, without regard to mileage.

How are ABS wheel speed sensor issues diagnosed?
Anti-lock braking systems are complex, and are typically diagnosed through professional computer scanning equipment, or manufacturer specific software. The technician will communicate with the ABS control module via computer, and view real-time data to determine what fault has been detected, and how the system is behaving. Once the technician identifies a suspected wheel speed sensor failure, physical inspection and probing will take place to ensure an accurate diagnosis. This includes inspecting the tip of the sensor for dirt and debris

 

Yep I have also broken one of those sensors trying to get it out of the old knuckle when lifting my truck 6" . I went to o'riley and picked one up for 200 bucks easy to put in not so easy to take out some times.