ABS/TCS light keeps coming on.

Only if the warning light showed on the dash...most often these abs sensors get clogged with brake dust or dislodged during wheel swaps if the pads are fine and fluid level correct...first check the brake pads then the disks and clean the sensors with an old toothbrush and reseat, also check the fluid level on the abs system.this should clear warning light.but any error codes stored on ecu need to be cleared using obd.

Whenever this warning light or any other stays on in the dash it is indicating that the systems control module (or the system sensor in the case of lights like low oil pressure, door open indicators etc.) has detected a fault, it then disables the system (this applies to ABS,TCS, TCM, SRS and BCM faults and others) as long as the light is on. You must now have the dealer hook up a special electronic diagnostic tool and "scan" the system for the fault code that is stored for the problem(s)

Legend of Abbreviations. ABS Antilock brake system.TCS Traction control system, TCM Transmission control module, SRS Supplemental restraint system, BCM Body control module

Does it only happen when you use the brakes? It could be a warped brake disc or a fault in the braking system. TCS and ABS use the brake system to operate and a fault could drag on the brakes killing your acceleration. Get it to a good mechanic soon so he can check it isn't a serious problem.

have scanned for the trouble code most auto stores offer this for free such as auto zone/ advanced auto check ur local area-the code can pinpoint the problem as to which side sensor or if module or if problem with transmission more than likely its an abs sensor check the wiring and connections first for damage or disconnected

some markets have a button on the dash with tcs/abs and a dash light saying "tcs off".if your car has not got the button then you cant turn it off(germany yes.uk no)abs/tcs should only be turned off in deep snow,otherwise best left alone,unless you have been taught how to drive with/without.....(on ice you wants the wheels to turn,on snow you want the snow to wedge to slow you down......)see what i mean???

usually when there is an interuption in current flow you will get flickering indicator lights on the dash. This means one of two things, either the sensors that control those indicator lights are becoming faulty or the alternator may be on its way out. One thing you need to keep in mind if you ABS unit is on its way out you will not notice any difference in drivability. ABS is just a brake assist(Antilock Brake System) when it fails you don't lose your brakes you just stop like a regular brake system would without an assist.(ABS) Maybe the unitis on its way out as well.. I would ge it checked as well.. Good Luck

You may have more than one code.
You may need a ABS sensor if the TCS light is coming on.
Check the codes again.

Wheel speed sensor out of adjustment

dear friend-it sounds like one of the sensors(wheel)is faulty or one pne of the turnwheels came loose.

I assume tht is traction control. Check fuses ,eeven abs fuses ,traction control is part of abs. If fuses ok will need scan tool to find cause of lite going on. Most common are abs sensors and broken abs wires. And if abs tone ring is part of axle shaft some rock may have damaged teeth of ring .