Skip to product information
SKU:
NLT1G01072
Ships for free in 2–4 business days.
John Deere ZTrak Ignition Switch AUC18708 UC10104
$38.99
In Stock
$38.99
Sale price
$38.99
Regular price
This new aftermarket rotary ignition switch replaces John Deere AUC18708, UC10104, TCA26088, TCA24615, AUC15805, and AUC13979 for compatible ZTrak and commercial mowing equipment.
Estimated delivery between
Let Northline Parts Do the Heavy Lifting for You!
Not sure which part you need? Our team can help you find the right replacement.
Parts Support Hours: Monday–Friday, 8:00 AM–5:00 PM CT
Live Chat: Available 24/7
I reached out for some replacement head bolts and they responded quickly with a few questions and cautionary information and is sending me some bolts. Great customer service! Thanks
Edward H. — Verified customer
Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- John Deere Z915, Z920, Z930, Z950, Z960 and Z970 ZTrak families
- John Deere 636M and 648M commercial mowers using AUC18708
- John Deere 1550, 1570, 1575, 1580 and 1585 front mowers
- John Deere 1600 Turbo Series III, 7200A and 8900A applications using this switch
Product Overview
When the key has to be moved just right, accessories flicker, or the starter signal disappears despite a charged battery, the switch is one likely checkpoint. Brake, seat and PTO interlocks, fuses, relays, and the harness must also pass testing.
The rotary switch provides key-controlled accessory, run, and start commands to the machine electrical system. It does not override the mower safety chain and should not be used to bypass it.
Match AUC18708 or its verified supersession, connector, terminal pattern, key positions, mounting, mower model, and serial number. Deere model families often include several suffixes and production changes.
Key Features & Performance
- Rotary key control for compatible Deere mower circuits
- Cross-references several superseded switch numbers
- Restores clean electrical contact when the original is worn
- Direct dash fit with the correct connector and serial range
Replaces Part Numbers
- AUC18708
- UC10104
- TCA26088
- TCA24615
- AUC15805
- AUC13979
Common Uses
- Fixing an intermittent no-crank condition
- Replacing a broken or water-damaged key switch
- Restoring accessory and run power
Technical Specifications
- Product Type: Rotary ignition switch
- Equipment: John Deere commercial and ZTrak mowers
- Primary Reference: AUC18708
- Condition: New aftermarket replacement
Installation & Fitment
- Set the parking brake and remove the key
- Disconnect the battery
- Check PTO, seat and brake interlock operation
- Compare plugs and switch positions
- Test starting and blade-enable safety behavior after installation
Compatibility Notice
Northline Parts does its best to list all known compatible models, but the correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and product photos before purchase.
Frequently Asked Questions
Q: Can the PTO switch make the mower not crank? A: Yes. The safety chain can block starting even when the ignition switch works.
Q: Will this fit a Z930M? A: It may fit compatible Z930 variants, but the serial range and original switch number must match.
Q: Does AUC18708 replace TCA26088? A: Parts references commonly cross the numbers, but compare the connector and machine catalog before ordering.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: John Deere AUC18708 ignition switch, UC10104 ZTrak switch replacement, Z930 mower no crank key switch, Z970 rotary switch, Deere commercial mower ignition repair
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.