How to Replace the Ignition Switch and Key Lock Cylinder Assembly on an Acura MDX?

A one-piece assembly is The Ignition Lock Cylinder and ignition switch assembly, which is also referred to as the "steering lock". If either the Ignition Lock Cylinder or the ignition switch fails, replace the assembly. Unplug negative battery terminal using cable followed by waiting for not less than three minutes. It is necessary to remove knee bolster and upper and lower steering column covers. Turn over driver's side fuse and relay box in order to reach panel backside. Trace electrical harness down from Ignition Lock Cylinder/ignition switch assembly towards driver's side fuse and relay box, detach any harness clips, then disconnect ignition switch electrical connector from fuse and relay box. Detach clip of driver's side airbag wiring harness from bracket on Ignition Lock Cylinder/ignition switch assembly. Disconnect small electrical connector from Ignition Lock Cylinder/ignition switch assembly. Center-punch two shear-head bolts that secure mounting clamp for Ignition Lock Cylinder/ignition switch assembly, next drill out center of each bolt removing bolts with use of screw extractor. Another possible way might be using a hammer chisel to knock off bolts in a counterclockwise direction. Remove bracket then separate lock cylinder/ignition switch assembly at steering column. Reverse steps for installation process after completing removal process hereinabove outlined in steps 1 through 14. Tighten new shear-head bolts until heads break off completely. After finishing reconnect cable back onto negative battery terminal again Verify proper functioning of Ignition Lock Cylinder/ignition switch assembly.

Genuine Acura MDX Ignition Switch

Starter Ignition Switch

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8 Ignition Switches found

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Acura MDX Switch Assembly
Part Number: 35881-TZ5-A01
$294.43 MSRP: $420.50
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Product Specifications
- Other Name: Power Switch; Start Button
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Switch Assembly
Part Number: 35881-TYA-A01
$33.51 MSRP: $46.73
You Save: $13.22 (29%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Power Switch, Start Button
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Ignition Switch
Part Number: 35130-S3V-A01
$125.38 MSRP: $177.08
You Save: $51.70 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Switch, Steering
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Ignition Lock Cylinder Steering Lock Assembly
Part Number: 35100-S3V-A05NI
$377.38 MSRP: $538.97
You Save: $161.59 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Lock Assembly, Steering
- Replaces: 35100-S3V-A05, 35100-S3V-A04
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Steering Switch
Part Number: 35130-SJA-A01
$96.28 MSRP: $135.07
You Save: $38.79 (29%)
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Product Specifications
- Other Name: Switch, Steering ; Ignition Switch; Ignition Switch
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Switch Assembly, Power
Part Number: 35881-TRX-A01
$199.14 MSRP: $284.40
You Save: $85.26 (30%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Power Switch, Start Button
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Steering Lock Assembly
Part Number: 35100-S3V-315NI
Product Specifications
- Other Name: Lock Assembly,Steering ; Lck Assembly,Steering
- Replaces: 35100-S3V-315, 35100-S3V-305, 35100-S3V-A06NI, 35100-S3V-A06, 35100-S3V-305NI
- Warranty: This genuine part is guaranteed by Acura's factory warranty.
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Acura MDX Steering Switch
Part Number: 35130-S3V-A03
Product Specifications
- Other Name: Switch, Steering ; Ignition Switch; Ignition Switch
- Replaces: 35130-S3V-A02
- Warranty: This genuine part is guaranteed by Acura's factory warranty.

Acura MDX Ignition Switch

The Acura MDX Ignition Switch allows the driver to route battery power into the starter, engine, and components with a simple twist of the key or press of a button. Early models of the Acura MDX had a steering column key and lock cylinder Ignition Switch that would only turn when the cut key matched the tumblers. Turning it to ACC would allow the radio to play. ON would turn on all systems, and START would send current to the starter for engine crank, while LOCK would disable power and lock the wheel. From the mid-2010s, the SUV switched to a push button Ignition Switch with a smart fob that allows drivers to keep the transmitter in a pocket while the computer checks its code to allow the engine to start. Both styles of switches are intended to prevent theft, but if the contacts of the Ignition Switch wear or the coded key signal fails, the Acura SUV can crank slowly, stall, or show warning lights on the vehicle's dashboard over rough roads. Replacing a faulty Ignition Switch or lock cylinder will restore reliable starting as well as smooth component operation throughout all generations of MDX. Regular use of the correct key or fob allows electronics on the Acura to stay in sync, so each MDX reacts immediately when power is requested.

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Acura MDX Ignition Switch Parts Questions & Experts Answers

Ignition Switch
35130-S3V-A01
Q: How to Replace the Ignition Switch and Key Lock Cylinder Assembly on an Acura MDX?
A:
A one-piece assembly is The Ignition Lock Cylinder and ignition switch assembly, which is also referred to as the "steering lock". If either the Ignition Lock Cylinder or the ignition switch fails, replace the assembly. Unplug negative battery terminal using cable followed by waiting for not less than three minutes. It is necessary to remove knee bolster and upper and lower steering column covers. Turn over driver's side fuse and relay box in order to reach panel backside. Trace electrical harness down from Ignition Lock Cylinder/ignition switch assembly towards driver's side fuse and relay box, detach any harness clips, then disconnect ignition switch electrical connector from fuse and relay box. Detach clip of driver's side airbag wiring harness from bracket on Ignition Lock Cylinder/ignition switch assembly. Disconnect small electrical connector from Ignition Lock Cylinder/ignition switch assembly. Center-punch two shear-head bolts that secure mounting clamp for Ignition Lock Cylinder/ignition switch assembly, next drill out center of each bolt removing bolts with use of screw extractor. Another possible way might be using a hammer chisel to knock off bolts in a counterclockwise direction. Remove bracket then separate lock cylinder/ignition switch assembly at steering column. Reverse steps for installation process after completing removal process hereinabove outlined in steps 1 through 14. Tighten new shear-head bolts until heads break off completely. After finishing reconnect cable back onto negative battery terminal again Verify proper functioning of Ignition Lock Cylinder/ignition switch assembly.